Answer:
The pattern observed in polar equations of the form r = sin(kθ) involves k-fold symmetry, where the value of k determines the number of waves or lobes in the graph. This pattern arises due to the nature of the sine function and the effect of the factor k on its argument.
Step-by-step explanation:
When exploring polar equations of the form r = sin(kθ), where k is a natural number, we can observe an interesting pattern. Let's investigate this pattern further by experimenting with different values of k using a graphing program like Desmos.
As we vary the value of k, we notice that the resulting polar graphs exhibit k-fold symmetry. In other words, the graph repeats itself k times as we traverse a full revolution (2π) around the origin.
For example, when k = 1, the polar graph of r = sin(θ) represents a single wave that completes one cycle as θ varies from 0 to 2π.
When k = 2, the polar graph of r = sin(2θ) displays two waves that repeat themselves twice as θ varies from 0 to 2π. The graph is symmetric with respect to the polar axis (θ = 0) and the vertical line (θ = π/2).
Similarly, for larger values of k, such as k = 3, 4, 5, and so on, the resulting polar graphs exhibit 3-fold, 4-fold, 5-fold symmetry, respectively. The number of waves or lobes in the graph increases with the value of k.
To explain why this pattern holds, we can analyze the behavior of the sine function. The sine function has a period of 2π, meaning it repeats itself every 2π units. When we introduce the factor of k in the argument, such as sin(kθ), it effectively compresses or stretches the graph horizontally by a factor of k.
Thus, when k is an even number, the graph becomes symmetric with respect to both the polar axis and vertical lines, resulting in k-fold symmetry. The lobes or waves of the graph increase in number as k increases. On the other hand, when k is an odd number, the graph retains symmetry with respect to the polar axis but lacks symmetry with respect to vertical lines.
In summary, the pattern observed in polar equations of the form r = sin(kθ) involves k-fold symmetry, where the value of k determines the number of waves or lobes in the graph. This pattern arises due to the nature of the sine function and the effect of the factor k on its argument.
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solve part a and b
Use the specified substitution to find or evaluate the integral. 12 dx U VX Use the specified substitution to find or evaluate the integral. (Use C for the constant of integration.) VX-3 dx, U= VX-3
To evaluate the integral ∫(VX-3) dx, we can use the substitution U = VX-3. The resulting integral will be in terms of U, and we can then solve it by integrating with respect to U.
Let's start by substituting U = VX-3. Taking the derivative of U with respect to X gives dU/dX = (VX-3)' = V. Solving this equation for dX gives dX = dU/V.
Substituting these values into the original integral, we have:
∫(VX-3) dx = ∫U (dX/V).
Now, we can rewrite the integral in terms of U and perform the integration:
∫U (dX/V) = ∫(U/V) dX.
Since dX = dU/V, the integral becomes:
∫(U/V) dX = ∫(U/V) (dU/V).
Now, we have a new integral in terms of U. We can simplify it by dividing U by V and integrating with respect to U:
∫(U/V) (dU/V) = ∫(1/V) dU.
Integrating ∫(1/V) dU gives ln|V| + C, where C is the constant of integration.
Therefore, the final result is ∫(VX-3) dx = ln|V| + C.
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Write the equation of a sine curve that has an amplitude of 3, a period of 3π, a phase shift of to the right, and a vertical shift of 5.
The amplitude of the sine curve is 3, the period is 3π, the phase shift is to the right, and the vertical shift is 5.
The general equation for a sine curve is y = A sin (B(x - C)) + D,
where A is the amplitude, B is the frequency, C is the horizontal phase shift, and D is the vertical phase shift.
Using the given values, the equation of the sine curve is:
y = 3 sin (2π/3 (x + π/2)) + 5.
The phase shift is to the right, which means C > 0, but the exact value is not given. Finally, the vertical shift is 5, so D = 5. The phase shift value C determines the horizontal position of the curve. If you have a specific value for C, you can substitute it into the equation. Otherwise, you can leave it as is to represent a general phase shift to the right.
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(a) Prove that if A, B and C are sets then (A x B)U(A C) = A x (BUC). (b) Give an example of nonempty sets D, E and F such that DCEUF, DO E, and DEF
(a × b) ∪ (a × c) contains all elements of a × (b ∪ c), and we have a × (b ∪ c) ⊆ (a × b) ∪ (a × c).
(a) to prove the equality (a × b) ∪ (a × c) = a × (b ∪ c) for sets a, b, and c, we need to show that both sides are subsets of each other.first, let's consider an arbitrary element (a, b) in (a × b) ∪ (a × c). this means that either (a, b) belongs to a × b or (a, b) belongs to a × c.
if (a, b) belongs to a × b, then a ∈ a and b ∈ b. , (a, b) also belongs to a × (b ∪ c) since b ∈ (b ∪ c). this shows that (a × b) ∪ (a × c) ⊆ a × (b ∪ c).now, let's consider an arbitrary element (a, c) in a × (b ∪ c). this means that a ∈ a and c ∈ (b ∪ c). if c ∈ b, then (a, c) belongs to a × b, which implies (a, c) belongs to (a × b) ∪ (a × c). if c ∈ c, then (a, c) belongs to a × c, which also implies (a, c) belongs to (a × b) ∪ (a × c). since we have shown both (a × b) ∪ (a × c) ⊆ a × (b ∪ c) and a × (b ∪ c) ⊆ (a × b) ∪ (a × c), we can conclude that (a × b) ∪ (a × c) = a × (b ∪ c).(b) for the second part of your question, you mentioned "give an example of nonempty sets d, e, and f such that d ⊆ e ⊆ f." based on this, we can provide an example:
let d = {1}, e = {1, 2}, and f = {1, 2, 3}. in this case, we have d ⊆ e ⊆ f, as d contains only the element 1, e contains both 1 and 2, and f contains 1, 2, and 3.
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FILL THE BLANK. The period of the tangent and cotangent functions is _____. The period of the sine, cosine, cosecant, and secant functions is _____.
The period of the tangent and cotangent functions is π, while the period of the sine, cosine, cosecant, and secant functions is 2π.
The period of a trigonometric function is the length of one complete cycle of the function before it repeats itself. For the tangent and cotangent functions, their periods are π.
The tangent function, denoted as tan(x), is defined as the ratio of the sine function to the cosine function: [tex]$\tan(x) = \frac{{\sin(x)}}{{\cos(x)}}$[/tex]. The tan function has a period of π because it repeats its values every π radians or 180 degrees. This means that if you graph the tangent function, it will complete one cycle from 0 to π, and then repeat the same pattern.
Similarly, the cotangent function, denoted as cot(x), is the reciprocal of the tangent function: [tex]$\cot(x) = \frac{1}{{\tan(x)}}$[/tex]. Since the tangent function repeats every π radians, the cotangent function also has a period of π.
On the other hand, the sine, cosine, cosecant, and secant functions have a period of 2π. The sine function, denoted as sin(x), and the cosine function, denoted as cos(x), both complete one cycle from 0 to 2π before repeating their pattern. The cosecant function, cosec(x), is the reciprocal of the sine function, and the secant function, sec(x), is the reciprocal of the cosine function. Therefore, they also have a period of 2π.
In summary, the period of the tangent and cotangent functions is π, while the period of the sine, cosine, cosecant, and secant functions is 2π.
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1. (1 point) For each of the following series, tell whether or not you can apply the 3-condition test (.e. the alternating series test). Enter if the series diverges by this test, C if the series converges by this test, and if you cannot apply this test (even if you know how the series behaves by some other test). (-1)"(n"+ 2n) *-1 (-1)"(n+1) +7 3. (-1)* costn) na? (-1)"(n0+1) 2. 1 . 1 4. 5. 6 (-1)" (n° +1) +1
The series (-1)^(n+2n) * -1 converges by the alternating series test.
The series (-1)^(n+1) + 7 does not allow for the application of the alternating series test.
The series (-1)^n * cos(tn) does not allow for the application of the alternating series test.
The series (-1)^(n+1) / n^2 converges by the alternating series test.
The series 1/((n+1)^2) does not allow for the application of the alternating series test.
The series (-1)^(n+1) + 1 converges by the alternating series test.
Let's analyze each series in detail:
The series (-1)^(n+2n) * -1:
This series can be written as (-1)^(3n) * (-1). We can see that the exponent (3n) is always divisible by 3, so (-1)^(3n) will alternate between 1 and -1. The series is multiplied by (-1), so the signs will alternate again. The series becomes: 1, -1, 1, -1, ...
This series satisfies the conditions for the alternating series test since the terms alternate in sign and the absolute value of the terms decreases as n increases. Therefore, the series converges by the alternating series test.
The series (-1)^(n+1) + 7:
This series does not follow the form required for the alternating series test. The alternating series test applies to series where the terms alternate in sign. However, in this series, the terms do not alternate in sign. Therefore, we cannot apply the alternating series test to determine the convergence or divergence of this series.
The series (-1)^n * cos(tn):
This series does not satisfy the requirements for the alternating series test. The alternating series test applies to series where the terms alternate in sign, but in this series, the sign of the terms depends on the value of cos(tn), which can be positive or negative. Therefore, we cannot apply the alternating series test to determine the convergence or divergence of this series.
The series (-1)^(n+1) / n^2:
This series follows the form required for the alternating series test. The terms alternate in sign, and the absolute value of the terms decreases as n increases because n^2 is in the denominator. Therefore, the series converges by the alternating series test.
The series 1/((n+1)^2):
This series does not follow the form required for the alternating series test. The alternating series test applies to series where the terms alternate in sign, but in this series, all the terms are positive. Therefore, we cannot apply the alternating series test to determine the convergence or divergence of this series.
The series (-1)^(n+1) + 1:
This series follows the form required for the alternating series test. The terms alternate in sign, and the absolute value of the terms remains constant since it is always 1. Therefore, the series converges by the alternating series test.
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Evaluate the limit using L'Hôpital's rule et + 2.1 - 1 lim 20 6.6 Add Work Submit Question
The limit can be evaluated using L'Hôpital's rule. Applying L'Hôpital's rule to the given limit, we differentiate the numerator and the denominator with respect to t and then take the limit again.
Differentiating the numerator with respect to t gives 1, and differentiating the denominator with respect to t gives 0. Therefore, the limit of the given expression as t approaches 2.1 is 1/0, which is undefined.
L'Hôpital's rule can be used to evaluate limits when we have an indeterminate form, such as 0/0 or ∞/∞. However, in this case, the application of L'Hôpital's rule does not provide a finite result. The fact that the limit is undefined suggests that there is a vertical asymptote or a removable discontinuity at t = 2.1 in the original function. Further analysis or additional information about the function is necessary to determine the behavior around this point.
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10.5
8
Find x' for x(t) defined implicitly by x + x + t - 3 = 0 and then evaluate x' at the point (-1,1). X(-1,1)= (Simplify your answer.)
x' evaluated at the point (-1,1) is equal to 3/5.
To find x' for x(t) defined implicitly by the equation x⁴ + t⁴x + t - 3 = 0, we can differentiate both sides of the equation with respect to t using implicit differentiation.
Differentiating x⁴ + t⁴x + t - 3 with respect to t:
4x³ * dx/dt + t⁴ * dx/dt + 4t³x + 1 = 0
Rearranging the terms:
dx/dt (4x³ + t⁴) = -4t³x - 1
Now we can solve for dx/dt (x'):
dx/dt = (-4t³x - 1) / (4x³ + t⁴)
To evaluate x' at the point (-1,1), we substitute t = -1 and x = 1 into the expression for dx/dt:
x' = (-4*(-1)³*1 - 1) / (4*1³ + (-1)⁴)
x' = (4 - 1) / (4 + 1)
x' = 3 / 5
Therefore, x' evaluated at the point (-1,1) is equal to 3/5.
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Given question is incomplete, the complete question is below
Find x' for x(t) defined implicitly by x⁴ + t⁴x + t - 3 = 0 and then evaluate x' at the point (-1,1). X'(-1,1)= (Simplify your answer.)
evaluate the line integral, where c is the given curve. c x sin(y) ds, c is the line segment from (0, 2) to (4, 5)
The solution of the line integral [tex]\int\limits t \sin(2+3t) , dt[/tex].
What is integral?
The value obtained after integrating or adding the terms of a function that is divided into an infinite number of terms is generally referred to as an integral value.
To evaluate the line integral of the function f(x, y) = xsin(y) along the curve C which is the line segment from (0,2) to (4,5), we can parameterize the curve and then compute the integral.
Let's parameterize the curve
C with a parameter t such that x(t) and y(t) represent the x and y coordinates of the curve at the parameter value t.
Given that the curve is a line segment, we can use a linear interpolation between the initial and final points.
The parameterization is as follows:
x(t)=(1−t)⋅0+t⋅4=4t
y(t)=(1−t)⋅2+t⋅5=2+3t
Now, we can compute the line integral using the parameterization:
[tex]\int_{C} x \sin(y) , ds = \int_{a}^{b} f(x(t), y(t)) \cdot \left(x'(t)^2 + y'(t)^2\right) , dt[/tex]
where a and b are the parameter values corresponding to the initial and final points of the curve.
Substituting the parameterization and evaluating the integral, we have:
[tex]\int_{C} x \sin(y) , ds = \int_{0}^{1} (4t) \sin(2+3t) \cdot \left(4^2 + 3^2\right) , dt[/tex]
To evaluate this integral, numerical methods or approximations can be used.
To evaluate the given integral, we need to perform the integration on both sides of the equation.
On the left-hand side:
[tex]\int\limit_{C} x \sin(y) ds[/tex]
On the right-hand side:
[tex]\int\limits_0^{1} (4t) \sin(2+3t) \cdot (4^2 + 3^2) , dt[/tex]
Let's start by evaluating the integral on the right-hand side. The integral can be simplified as follows:
[tex]\int\limits_0^{1} (4t) \sin(2+3t) \cdot (4^2 + 3^2) , dt= 49 \int\limits_{0}^{1} t \sin(2+3t) , dt[/tex]
Unfortunately, the integral [tex]\int\limits t \sin(2+3t) , dt[/tex] does not have a simple closed-form solution. It requires numerical integration techniques or approximation methods to evaluate it.
However, it is important to note that the left-hand side of the equation is also in integral form and represents the length of curve C. Without knowing the specific curve C, it is not possible to evaluate the left-hand side of the equation without further information.
Therefore, the given integral cannot be evaluated without additional details about the curve C or without using numerical methods for approximating the right-hand side integral.
Hence, the solution of the line integral [tex]\int\limits t \sin(2+3t) , dt[/tex].
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The demand functions for a product of a firm in domestic and foreign markets are:
Qo = 30 - 0.2Po
QF = 40 - 0.5PF The firm's cost function is C=50 + 3Q + 0.5Q7, where O is the output produced for domestic market, Q is the output produced for foreign market, Po is the price for domestic
market and PF is the price for the foreign market.
a) Determine the total output such that the manufacturer's revenue is maximised.
b) Determine the prices of the two products at which profit is maximised.
C)
Compare the price elasticities of demand for both domestic and foreign markets when
profit is maximised. Which market is more price sensitive?
The problem involves determining the total output for maximizing the manufacturer's revenue, finding the prices of the products at which profit is maximized, and comparing the price elasticities of demand in the domestic and foreign markets when profit is maximized.
a) To maximize the manufacturer's revenue, we need to find the total output at which the revenue is maximized. The revenue can be calculated by multiplying the output in each market by its respective price. So, the total revenue (TR) is given by TR = Qo * Po + QF * PF. To maximize the revenue, we differentiate TR with respect to the total output and set it equal to zero. By solving the resulting equation, we can determine the total output at which the manufacturer's revenue is maximized.
b) To find the price at which profit is maximized, we need to calculate the profit function. Profit (π) is given by π = TR - TC, where TC is the total cost. By differentiating the profit function with respect to the prices of the products and setting the derivatives equal to zero.
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Type the correct answer in each box. Round your answers to the nearest dollar.
These are the cost and revenue functions for a line of 24-pound bags of dog food sold by a large distributor:
R(x) = -31.72x2 + 2,030x
C(x) = -126.96x + 26,391
The maximum profit of $
can be made when the selling price of the dog food is set to $
per bag.
Answer:
The profit function P(x) is defined as the difference between the revenue function R(x) and the cost function C(x): P(x) = R(x) - C(x). Substituting the given functions for R(x) and C(x), we get:
P(x) = (-31.72x^2 + 2030x) - (-126.96x + 26391) = -31.72x^2 + 2156.96x - 26391
To find the maximum profit, we need to find the vertex of this quadratic function. The x-coordinate of the vertex is given by the formula x = -b/(2a), where a = -31.72 and b = 2156.96. Substituting these values into the formula, we get:
x = -2156.96/(2 * (-31.72)) ≈ 34
Substituting this value of x into the profit function, we find that the maximum profit is:
P(34) = -31.72(34)^2 + 2156.96(34) - 26391 ≈ $4,665
The selling price of the dog food is given by the revenue function divided by x: R(x)/x = (-31.72x^2 + 2030x)/x = -31.72x + 2030. Substituting x = 34 into this equation, we find that the selling price of the dog food should be set to:
-31.72(34) + 2030 ≈ $92
So, the maximum profit of $4,665 can be made when the selling price of the dog food is set to $92 per bag.
for a confidence level of 95%, find the critical value out of 600 people sampled, 174 preferred candidate a. based on this, estimate what proportion of the voting population () prefers candidate a 90% confidence level, and give your answers as decimals, to three places. <
Therefore, with a 90% confidence level, we estimate that the proportion of the voting population that prefers candidate A is between 0.252 and 0.328, rounded to three decimal places.
To find the critical value for a confidence level of 95%, we use the standard normal distribution.
Since the sample size is large (600 people sampled), we can use the normal approximation to the binomial distribution. The formula for the confidence interval is:
Estimate ± (Critical Value) * (Standard Error)
In this case, we have 174 out of 600 people who preferred candidate A, so the proportion is 174/600 = 0.29.
To find the critical value, we need to determine the z-score corresponding to a 95% confidence level. Using a standard normal distribution table or a calculator, we find that the z-score for a 95% confidence level is approximately 1.96.
Next, we need to calculate the standard error. The formula for the standard error in this case is:
Standard Error = sqrt((p * (1 - p)) / n)
where p is the sample proportion (0.29) and n is the sample size (600).
Plugging in the values, we have:
Standard Error = sqrt((0.29 * (1 - 0.29)) / 600) ≈ 0.0195
Now, we can calculate the confidence interval:
0.29 ± (1.96 * 0.0195)
The lower bound of the confidence interval is 0.29 - (1.96 * 0.0195) ≈ 0.2519, and the upper bound is 0.29 + (1.96 * 0.0195) ≈ 0.3281.
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If the following integral converges, so state and show to what it converges. If the integral diverges, so state and show the work that confirms your conclusion.
.6 1 :dx 3x - 5 3
Given the following integral; 6 1 :dx 3x - 5 3, as t approaches infinity, the first term goes to zero. Therefore, the integral converges to -0.1/4. Thus, the integral converges to -0.025.
To determine if the following integral converges or diverges, we can use the integral test.
First, we need to find the antiderivative of the integrand:
∫(0.6x)/(3x - 5)³ dx = -0.1/(3x - 5)² + C
Next, we evaluate the integral from 1 to infinity:
∫(1 to ∞) (0.6x)/(3x - 5)³ dx = lim as t → ∞ (-0.1/(3t - 5)² + C) - (-0.1/(3 - 5)² + C)
= -0.1/9t² - (-0.1/4)
= -0.1(1/9t² - 1/4)
As t approaches infinity, the first term goes to zero. Therefore, the integral converges to -0.1/4.
Thus, the integral converges to -0.025.
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Given the equation y = 3 sin(5(x + 6)) + 8 a. The amplitude? b. The period? wino estamonogid att sy ons yg C. The horizontal shift? d. The midline is:y=?
a) The amplitude of the given equation is 3.
b) The period of the given equation is 2π/5.
c) The horizontal shift of the given equation is -6.
d) The midline of the given equation is y = 8.
a) The amplitude of a sinusoidal function determines the maximum distance it reaches from its midline. In the given equation, y = 3 sin(5(x + 6)) + 8, the coefficient of sin is 3, which represents the amplitude. Therefore, the amplitude is 3.
b) The period of a sinusoidal function is the distance between two consecutive peaks or troughs. In the given equation, y = 3 sin(5(x + 6)) + 8, the coefficient of x inside the sin function is 5, which affects the period. The period is calculated as 2π divided by the coefficient of x, so the period is 2π/5.
c) The horizontal shift of a sinusoidal function determines the phase shift or the amount by which the function is shifted horizontally. In the given equation, y = 3 sin(5(x + 6)) + 8, the horizontal shift is given as -6, which means the graph is shifted 6 units to the left.
d) The midline of a sinusoidal function is the horizontal line that represents the average or midpoint of the graph. In the given equation, y = 3 sin(5(x + 6)) + 8, the midline is represented by the constant term, which is 8. Therefore, the midline is y = 8.
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Consider the vector field F and the curve C below.
F(x, y) = x4y5i + x5y4j,
C: r(t) = t3 − 2t, t3 + 2t ,
0 ≤ t ≤ 1
(a) Find a potential function f such that F = ∇f.
(b) Use part (a) to evaluate
(a) The potential function is f(x, y) = (1/5)x^5y^5 + C, where C is an arbitrary constant.
(b) The value of the line integral of F along the curve C is -243/5.
(a) To find a potential function f such that F = ∇f, we need to determine the function f(x, y) such that its partial derivatives with respect to x and y are equal to the components of F(x, y).
Given F(x, y) = x^4y^5i + x^5y^4j, we can integrate the components of F to find f(x, y):
∂f/∂x = [tex]x^4y^5[/tex]
∂f/∂y = [tex]x^5y^4[/tex]
Integrating the first equation with respect to x yields f(x, y) =[tex](1/5)x^5y^5[/tex] + g(y), where g(y) is a constant of integration that only depends on y.
Now, we differentiate this result with respect to y and set it equal to the second equation:
∂f/∂y = [tex]x^5y^4 = x^5y^4 + g'(y)[/tex]
Comparing the terms, we find that g'(y) = 0, which implies that g(y) is a constant.
Therefore, the potential function is f(x, y) = [tex](1/5)x^5y^5 + C[/tex], where C is an arbitrary constant.
(b) Using the potential function f(x, y) = (1/5)x^5y^5 + C from part (a), we can evaluate the line integral of F along the curve C by plugging in the parameterization of C into f and evaluating the difference of f at the endpoints.
C: r(t) = [tex]t^3 - 2t, t^3 + 2t,[/tex] 0 ≤ t ≤ 1
Evaluating f at the endpoints of C, we have:
f(r(1)) = [tex]f(1^3 - 2(1), 1^3 + 2(1)) = f(-1, 3) = (1/5)(-1)^5(3)^5 + C = -243/5 + C[/tex]
f(r(0)) = [tex]f(0^3 - 2(0), 0^3 + 2(0)) = f(0, 0) = (1/5)(0)^5(0)^5 + C = C[/tex]
Thus, the value of the line integral of F along C is:
∫F·dr = f(r(1)) - f(r(0)) = (-243/5 + C) - C = -243/5
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PLEASE HELP ASAP!!
Find, or approximate to two decimal places, the described area. The area bounded by the functions f(a) = x + 6 and g(x) = 0.7, and the lines I = 0 and 2 = 2. Preview TIP Enter your answer as a number
The area bounded by the functions f(x) = x + 6, g(x) = 0.7, and the lines x = 0 and x = 2 is 4.35 square units.
To find the area, we need to determine the points of intersection between the functions f(x) = x + 6 and g(x) = 0.7. Setting the two functions equal to each other, we get:
x + 6 = 0.7
Solving for x, we find:
x = -5.3
Thus, the point of intersection between the two functions is (-5.3, 0.7). Next, we need to determine the area between the two functions within the given interval. The area can be calculated as the integral of the difference between the two functions over the interval from x = 0 to x = 2. The integral is:
∫[(f(x) - g(x))]dx = ∫[(x + 6) - 0.7]dx
Simplifying the integral, we have:
∫[x + 5.3]dx
Evaluating the integral, we get:
(1/2)[tex]x^{2}[/tex]+ 5.3x
Evaluating the integral between x = 0 and x = 2, we find the area is approximately 4.35 square units.
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Given that yı = e-t is a solution of the equation, ty" + (3t - 1)y + (2t - 1)y = 0, t > 0 find a second linearly independent solution using the reduction of order method.
The second linearly independent solution of the equation ty" + (3t - 1)y + (2t - 1)y = 0, where t > 0 and yı = e^-t is a solution, can be found using the reduction of order method. The second solution is [tex]y_2 = te^{-t}[/tex].
To find the second solution using the reduction of order method, we assume the second solution has the form y2 = u(t) * y1, where y1 = e^-t is the given solution.
We differentiate y2 with respect to t to find y2' and substitute it into the differential equation:
[tex]y_2' = u(t) * y_1' + u'(t) * y_1[/tex]
Plugging in [tex]y_1 = e^{-t}[/tex] and [tex]y_1' = -e^{-t}[/tex], we have:
[tex]y_2' = u(t) * (-e^{-t}) + u'(t) * e^{-t}[/tex]
Now we substitute y2 and y2' back into the differential equation:
[tex]t * (u(t) * (-e^{-t}) + u'(t) * e^{-t}) + (3t - 1) * (t * e^{-t}) + (2t - 1) * (te^{-t}) = 0[/tex]
Expanding and rearranging terms, we get:
[tex]t * u'(t) * e^{-t} = 0[/tex]
Since t > 0, we can divide both sides of the equation by t and e^-t to obtain:
u'(t) = 0
Integrating both sides with respect to t, we find:
u(t) = c
where c is an arbitrary constant. Therefore, the second linearly independent solution is [tex]y_2 = e^{-t}[/tex], where [tex]y_1 = e^{-t}[/tex] is the given solution.
In summary, using the reduction of order method, we find that the second linearly independent solution of the given differential equation is [tex]y_2 = e^{-t}[/tex].
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Fill in the missing entries to complete the adjacency list representation of the given graph. 1 1 ollell 2 2. 3 3 (a) 3 (b) 14 (c) (d) 5 OT 4 4 4 07 5 5 (a): [Ex: 4 C (b): (c): (d):
The given information is insufficient to provide a specific answer or complete the adjacency list representation.
Fill in the missing entries to complete the adjacency list representation of the given graph: 1 -> [1, 2, 3], 2 -> [3, 4], 3 -> [4, 5], 4 -> [5, 7], 5 -> [ ].In an adjacency list representation of a graph, each vertex is listed along with its adjacent vertices.
However, the provided information is incomplete and lacks clarity.
The entries for (a), (b), (c), and (d) are not clearly defined, making it difficult to explain their meanings or fill in the missing values.
It would be helpful to provide a more complete and well-defined description or data to accurately explain and complete the adjacency list representation.
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please help!!!!! need this done asap, will upvote
partial-credit. Please make sure your answer Use u-substitution to evaluate the integral. √ 2¹ (2³-1)³ da Required work: If you use u-sub, then I need to see your "u" and "du" and the simplified
After applying u-substitution and simplifying, the integral evaluates to C.
To evaluate the integral ∫ √(2^1) (2^3 - 1)^3 da using u-substitution, we can make the following substitution i.e. u = 2^3 - 1.
Taking the derivative of u with respect to a, we have du/da = 0.
Now, let's solve for da in terms of du:
da = (1/du) * du/da
Substituting u and da into the integral, we have:
∫ √(2^1) (2^3 - 1)^3 da = ∫ √(2^1) u^3 (1/du) * du/da
Simplifying, we get:
∫ √2 * u^3 * (1/du) * du/da = ∫ √2 * u^3 * (1/du) * 0 du
Since du/da = 0, the integral becomes:
∫ 0 du = C, where C represents the constant of integration.
Therefore, after applying u-substitution and simplifying, the integral evaluates to C.
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Find the t-value such that the area in the right tail is 0.25 with 9 degrees of freedom.
With 9 degrees of freedom, the t-value that corresponds to an area of 0.25 in the right tail is roughly 0.705.
The degrees of freedom (df) of the t-distribution, which in this case is nine, define it. The likelihood of receiving a t-value that is less than or equal to a specific value is provided by the cumulative distribution function (CDF) of the t-distribution. Finding the t-value for a particular region of the right tail is necessary, though.
The quantile function, commonly referred to as the percent-point function or the inverse of CDF, can be used to overcome this issue. We may determine the t-value that corresponds to that area by passing the desired area (0.25), the degrees of freedom (9), and the quantile function into the quantile function.
We discover that the t-value for a right-tail area of 0.25 with 9 degrees of freedom is 0.705 using statistical software or t-tables.
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We want to use the Alternating Series Test to determine if the series: 00 2ܨ Σ(-1)* + 2 k=4 25 + 3 converges or diverges. We can conclude that: The series diverges by the Alternating Series Test. Th
We are given a series Σ((-1)^k+2)/(25 + 3k) and we want to determine if it converges or diverges using the Alternating Series Test. The conclusion is that the series diverges based on the Alternating Series Test.
To apply the Alternating Series Test, we need to check two conditions: the terms of the series must alternate in sign, and the absolute values of the terms must decrease as k increases.
In the given series, the terms alternate in sign due to the (-1)^k term. However, to determine if the absolute values of the terms decrease, we can rewrite the series as Σ((-1)^k+2)/(25 + 3k) = Σ((-1)^(k+2))/(25 + 3k).
Now, let's consider the absolute values of the terms. As k increases, the denominator 25 + 3k also increases. Since the numerator (-1)^(k+2) alternates between -1 and 1, the absolute values of the terms do not decrease as k increases.
According to the Alternating Series Test, for a series to converge, the terms must alternate in sign and the absolute values must decrease. Since the absolute values of the terms in the given series do not decrease, we can conclude that the series diverges.
Therefore, the series Σ((-1)^k+2)/(25 + 3k) diverges based on the Alternating Series Test.
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1 For f(x) = 4x + 7, determine f'(x) from definition. Solution f(x + h) – f(x) The Newton quotient h - = Simplifying this expression to the point where h has been eliminated in the denominator as a
To determine f'(x) for the function f(x) = 4x + 7 using the definition of the derivative, the Newton quotient is computed and simplified to eliminate h in the denominator.
The derivative of a function f(x) can be found using the definition of the derivative, which involves the Newton quotient. For the function f(x) = 4x + 7, we calculate f'(x) by evaluating the Newton quotient.
The Newton quotient is given by (f(x + h) - f(x)) / h, where h represents a small change in x.
Substituting f(x) = 4x + 7 into the Newton quotient, we have [(4(x + h) + 7) - (4x + 7)] / h.
Simplifying the expression inside the numerator, we get (4x + 4h + 7 - 4x - 7) / h.
Canceling out the terms that have opposite signs, we are left with (4h) / h.
Now, we can cancel out the h in the numerator and denominator, resulting in the derivative f'(x) = 4.
Therefore, the derivative of the function f(x) = 4x + 7 with respect to x, denoted as f'(x), is equal to 4.
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If it exists, what is the sum of the series? 1 (3) m=1
If it exists, the sum of the series is 3/2 or 1.5
The given series that you provided is written in summation notation as:
∑(m = 1)^(∞) 1/(3^m)
To determine if the series has a sum, we can use the formula for the sum of an infinite geometric series:
S = a / (1 - r)
where S is the sum of the series, a is the first term, and r is the common ratio.
In this case, a = 1 and r = 1/3.
Applying the formula, we get:
S = 1 / (1 - 1/3)
= 1 / (2/3)
= 3/2
Therefore, the sum of the series is 3/2 or 1.5.
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Find the derivative of the following functions:
632 (x)=8x −7√x +5x−8
(b) (x) = x2 sec(6x)
x4
3
(c) h(x)=∫ √16−
(a) The derivative of f(x)=8x⁶ −7[tex]\sqrt[3]{x^{2} +5x-8}[/tex] is f'(x) = 48x⁵ -7/3 × [tex](x^{2} +5x - 8)^{\frac{-2}{3} }[/tex] × (2x + 5)
(b) g'(x) = 2x × sec(6x) + 6x² × sec(6x) × tan(6x)
(c) h'(x) = [tex](16-x)^{\frac{1}{3} }[/tex]
(a) The derivative of the function f(x) = 8x⁶ - 7[tex]\sqrt[3]{x^{2} +5x - 8}[/tex], we can apply the chain rule and the power rule.
f'(x) = (d/dx)(8x⁶) - (d/dx)7[tex]\sqrt[3]{x^{2} +5x - 8}[/tex]
Using the power rule for the first term:
f'(x) = 48x⁵ - (d/dx)7[tex]\sqrt[3]{x^{2} +5x - 8}[/tex]
Now, let's differentiate the second term using the chain rule. Let u = x^2 + 5x - 8.
f'(x) = 48x⁵ - 7(d/dx)([tex]u^{\frac{1}{3} }[/tex])
Applying the chain rule to the second term:
f'(x) = 48x⁵ - 7 × (1/3) × [tex]u^{-\frac{2}{3} }[/tex] × (d/dx)(u)
Now, substituting back u = x² + 5x - 8:
f'(x) = 48x⁵ - 7/3 × [tex](x^{2} +5x - 8)^{\frac{-2}{3} }[/tex] × (d/dx)(x² + 5x - 8)
The derivative of (x² + 5x - 8) with respect to x is simply 2x + 5. Substituting this back:
f'(x) = 48x⁵ -7/3 × [tex](x^{2} +5x - 8)^{\frac{-2}{3} }[/tex] × (2x + 5)
(b) The derivative of the function g(x) = x² sec(6x), we can use the product rule and the chain rule.
g'(x) = (d/dx)(x²) × sec(6x) + x² × (d/dx)(sec(6x))
Using the power rule for the first term:
g'(x) = 2x × sec(6x) + x² × (d/dx)(sec(6x))
Now, using the chain rule for the second term:
g'(x) = 2x × sec(6x) + x² × sec(6x) × tan(6x) × (d/dx)(6x)
Simplifying further:
g'(x) = 2x × sec(6x) + 6x² × sec(6x) × tan(6x)
(c) The derivative of the function h(x) = lim(x->1) ∫ [tex]\sqrt[3]{16-t} dt[/tex] dt, we can apply the Fundamental Theorem of Calculus.
Since the limit involves an integral evaluated at x = 1, we can treat the limit as a constant and differentiate the integrand:
h'(x) = d/dx ∫ [tex]\sqrt[3]{16-t} dt[/tex] dt
Using the Fundamental Theorem of Calculus, the derivative of an integral is the integrand itself:
h'(x) = [tex](16-x)^{\frac{1}{3} }[/tex]
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The question is incomplete the complete question is :
Find the derivative of the following functions:
(a) f(x)=8x⁶ −7[tex]\sqrt[3]{x^{2} +5x-8}[/tex]
(b) g(x) = x² sec(6x)
(c) h(x)=lim 1 to x⁴∫ [tex]\sqrt[3]{16-t} dt[/tex] dt
Nonlinear functions can lead to some interesting results. Using the function g(x)=-2|r-2|+4 and the initial value of 1.5 leads to the following result after many
iterations.
• g(1.5)=-21.5-2+4=3
・(1.5)=g(3)=-23-2+4=2
• g' (1.5) = g (2)=-22-2+4=4
•8(1.5)=g(4)=-214-2+4=0
• g'(1.5)= g(0)=-20-2+4=0
Using the function g(x) = -2|r-2| + 4 and the initial value of 1.5, the iterations lead to the results: g(1.5) = 3, g(3) = 2, g'(1.5) = 4, g(4) = 0, and g'(1.5) = 0.
We start with the initial value of x = 1.5 and apply the function g(x) = -2|r-2| + 4 to it.
g(1.5) = -2|1.5-2| + 4 = -2|-0.5| + 4 = -2(0.5) + 4 = 3.
Next, we substitute the result back into the function: g(3) = -2|3-2| + 4 = -2(1) + 4 = 2.
Taking the derivative of g(x) with respect to x, we have g'(x) = -2 if x ≠ 2. So, g'(1.5) = g(2) = -2|2-2| + 4 = 4.
Continuing the iteration, g(4) = -2|4-2| + 4 = -2(2) + 4 = 0.
Finally, g'(1.5) = g(0) = -2|0-2| + 4 = 0.
The given iterations illustrate the behavior of the function g(x) for the given initial value of x = 1.5. The function involves absolute value, resulting in different values depending on the input.
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Evaluate the integral. T/6 6 secx dx 2 х 0 2 1/6 s 6 sec ?x dx = 0 (Type an exact answer.)
To evaluate the integral, let's break it down step by step.
[tex]\int\limits^2_0 {(2/6)sec(x)} \, dx[/tex]
First, let's simplify the expression:
[tex]\int\limits^2_0 (1/3)sec(x) dx[/tex]
To evaluate this integral, we can use the formula for the integral of the secant function:
∫sec(x)dx = ln |sec(x) + tan(x)| + C
Applying this formula to our integral, we get:
[tex](1/3)\int\limits^2_0 {sec(x)} \, dx[/tex]
= (1/3)[ln |sec(2) + tan(2)| - ln |sec(0) + tan(0)| ]
Since sec(0) = 1 and tan(0) = 0, the second term becomes zero:
(1/3)[ln |sec(2) + tan(2)| - ln(1)]
= (1/3) ln |sec(2) + tan(2)|
Therefore, the exact value of the integral is (1/3) ln |sec(2) + tan(2)|.
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show all the work for both parts please
5. Find the sum of the following geometric series: (a) 9 (0.8) ) n=0 00 (b) (1 - p)", where 0 < p < 1. (Your answer will be in terms of p.) N=0
The calculated sum of the geometric series are
(a) [tex]\sum\limits^{\infty}_{0} {(0.8)^n[/tex] = 5
(b) [tex]\sum\limits^{\infty}_{0} {(1 - p)^n[/tex] = 1/p
How to find the sum of the geometric seriesFrom the question, we have the following parameters that can be used in our computation:
(a) [tex]\sum\limits^{\infty}_{0} {(0.8)^n[/tex]
In the above series, we have
First term, a = 1
Common ratio, r = 0.8
The sum to infinity of a geometric series is
Sum = a/(1 - r)
So, we have
Sum = 1/(1 - 0.8)
Evaluate
Sum = 5
Next, we have
(b) [tex]\sum\limits^{\infty}_{0} {(1 - p)^n[/tex]
In the above series, we have
First term, a = 1
Common ratio, r = 1 - p
The sum to infinity of a geometric series is
Sum = a/(1 - r)
So, we have
Sum = 1/(1 - 1 + p)
Evaluate
Sum = 1/p
Hence, the sum of the geometric series are 5 and 1/p
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Question
5. Find the sum of the following geometric series:
(a) [tex]\sum\limits^{\infty}_{0} {(0.8)^n[/tex]
(b) [tex]\sum\limits^{\infty}_{0} {(1 - p)^n[/tex] where 0 < p < 1. (Your answer will be in terms of p)
◆ Preview assignment 09 → f(x) = (x² - 6x-7) / (x-7) For the function above, find f(x) when: (a) f(7) (b) the limit of f(x) as x→ 7 from below (c) the limit of f(x) as x →7 from above → Not
For the given function f(x) = (x² - 6x - 7) / (x - 7) we obtain:
(a) f(7) is undefined,
(b) Limit of f(x); lim(x → 7⁻) f(x) = 20.9,
(c) Limit of f(x); llim(x → 7⁺) f(x) = -20.9
To obtain the value of the function f(x) = (x² - 6x - 7) / (x - 7) for the given scenarios, let's evaluate each case separately:
(a) f(7):
To find f(7), we substitute x = 7 into the function:
f(7) = (7² - 6(7) - 7) / (7 - 7)
= (49 - 42 - 7) / 0
= 0 / 0
The expression is undefined at x = 7 because it results in a division by zero. Therefore, f(7) is undefined.
(b) Limit of f(x) as x approaches 7 from below (x → 7⁻):
To find this limit, we approach x = 7 from values less than 7. Let's substitute x = 6.9 into the function:
lim(x → 7⁻) f(x) = lim(x → 7⁻) [(x² - 6x - 7) / (x - 7)]
= [(6.9² - 6(6.9) - 7) / (6.9 - 7)]
= [(-2.09) / (-0.1)]
= 20.9
The limit of f(x) as x approaches 7 from below is equal to 20.9.
(c) Limit of f(x) as x approaches 7 from above (x → 7⁺):
To find this limit, we approach x = 7 from values greater than 7. Let's substitute x = 7.1 into the function:
lim(x → 7⁺) f(x) = lim(x → 7⁺) [(x² - 6x - 7) / (x - 7)]
= [(7.1² - 6(7.1) - 7) / (7.1 - 7)]
= [(-2.09) / (0.1)]
= -20.9
The limit of f(x) as x approaches 7 from above is equal to -20.9.
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Find the derivative
g(x) = 2x - cos (3 - 2x) - f(x) = 6 ln(7x2 + 1) + 3% =
The derivative of g(x) is 2 + 2sin(3 - 2x) - f'(x), and the derivative of f(x) is 84x/(7x^2 + 1) + 0.03.
To find the derivative of g(x), we differentiate each term separately. The derivative of 2x is 2, the derivative of cos(3 - 2x) is -2sin(3 - 2x) due to the chain rule, and the derivative of f(x) is obtained by differentiating ln(7x^2 + 1) using the chain rule, resulting in 84x/(7x^2 + 1). Finally, the derivative of 3% is 0.03.
To find the derivative of a function, we need to differentiate each term separately.
For the function g(x) = 2x - cos(3 - 2x) - f(x), we have three terms: 2x, cos(3 - 2x), and f(x).
The derivative of 2x is simply 2, as the derivative of x with respect to x is 1, and the derivative of a constant (2) is 0.
The term cos(3 - 2x) requires the application of the chain rule. The derivative of cos(u) is -sin(u), and when we differentiate the inner function (3 - 2x) with respect to x, we get -2. Therefore, the derivative of cos(3 - 2x) is -2sin(3 - 2x).
For the function f(x) = 6ln(7x^2 + 1) + 3%, we have one term: ln(7x^2 + 1).
To differentiate ln(7x^2 + 1), we apply the chain rule. The derivative of ln(u) is 1/u, and when we differentiate the inner function (7x^2 + 1) with respect to x, we get 14x. Therefore, the derivative of ln(7x^2 + 1) is (14x)/(7x^2 + 1).
Finally, the derivative of 3% is 0.03, as percentages can be treated as constant terms during differentiation.
So, the derivative of g(x) is 2 + 2sin(3 - 2x) - f'(x), where f'(x) represents the derivative of f(x), which is 6(14x)/(7x^2 + 1) + 0.03.
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b lim (g(x) dx = K, Given the limit 6000 where K €1-00,00) and g(x) is a continuous, positive g(n)? decreasing function, what statement cannot be made about n=0 A. K can be any value on the interval
The statement that cannot be made about n = 0 is "K can be any value on the interval."
To understand why this statement cannot be made, let's analyze the given information. We know that the limit of the integral b lim (g(x) dx) as n approaches infinity is equal to K, where K is a specific value in the interval [0, 10000]. Additionally, g(x) is a continuous and positive decreasing function.
The fact that g(x) is a continuous and positive decreasing function implies that it approaches a finite limit as x approaches infinity. This means that as x increases, the values of g(x) become smaller and eventually stabilize around a certain value.
Now, when we consider the limit of the integral b lim (g(x) dx) as n approaches infinity, it represents the accumulation of the function g(x) over an increasing interval. As n becomes larger and larger, the interval over which we integrate g(x) expands.
Since g(x) is a decreasing function, the integral b lim (g(x) dx) will also approach a finite limit as n approaches infinity. This limit is the value K mentioned in the question. It represents the total accumulation of the function g(x) over the infinite interval.
However, it is important to note that as n approaches 0 (the lower limit of integration), the interval over which we integrate g(x) becomes smaller and smaller. This means that the value of the integral will be affected by the behavior of g(x) near x = 0.
Given that g(x) is a continuous and positive decreasing function, we can make certain observations about its behavior near x = 0. For example, we can say that g(x) approaches a finite positive value as x approaches 0. However, we cannot make any specific statements about the exact value of the integral at n = 0. It could be any value within the interval [0, K].
In summary, while we can make general statements about the behavior of g(x) and the limit of the integral as n approaches infinity, we cannot determine the exact value of the integral at n = 0. Therefore, the statement "K can be any value on the interval" cannot be made about n = 0.
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I
need 11,12,13 with detailed explanation please
For each function, evaluate the stated partials. f(x,y) = 5x3 + 4x2y2 – 3y2 - 11. fx(-1,2), fy(-1,2) g(x,y) = ex2 + y2 12 9x(0,1), gy(0,1) f(x,y) = ln(x - y) + x3y2 13 fx(2,1), fy(2,1)
For each function the values are,
11. fx(-1, 2) = -17, fy(-1, 2) = 4
12. gx(0, 1) = 0, gy(0, 1) = 213.
fx(2, 1) = 13, fy(2, 1) = 15
11. For the function f(x, y) = 5x³ + 4x²y² - 3y² - 11:
a) To find fx, we differentiate f(x, y) with respect to x while treating y as a constant:
fx(x, y) = d/dx (5x³ + 4x²y² - 3y²- 11)
Taking the derivative of each term separately:
fx(x, y) = d/dx (5x³) + d/dx (4x²y²) + d/dx (-3y²) + d/dx (-11)
Differentiating each term:
fx(x, y) = 15x² + 8xy² + 0 + 0
Simplifying the expression, we have:
fx(x, y) = 15x² + 8xy²
b) To find fy, we differentiate f(x, y) with respect to y while treating x as a constant:
fy(x, y) = d/dy (5x³ + 4x²y² - 3y² - 11)
Taking the derivative of each term separately:
fy(x, y) = d/dy (5x³) + d/dy (4x²y²) + d/dy (-3y²) + d/dy (-11)
Differentiating each term:
fy(x, y) = 0 + 8x²y + (-6y) + 0
Simplifying the expression, we have:
fy(x, y) = 8x²y - 6y
Now, let's evaluate the partial derivatives at the given points.
a) Evaluating fx(-1, 2):
Substituting x = -1 into fx(x, y):
fx(-1, 2) = 15(-1)² + 8(-1)(2)²
= 15 + 8(-1)(4)
= 15 - 32
= -17
Therefore, fx(-1, 2) = -17.
b) Evaluating fy(-1, 2):
Substituting x = -1 into fy(x, y):
fy(-1, 2) = 8(-1)²(2) - 6(2)
= 8(1)(2) - 6(2)
= 16 - 12
= 4
Therefore, fy(-1, 2) = 4.
12. For the function g(x, y) =[tex]e^{x^{2[/tex] + y² - 12:
a) To find gx, we differentiate g(x, y) with respect to x while treating y as a constant:
gx(x, y) = d/dx ([tex]e^{x^{2[/tex] + y² - 12)
Taking the derivative of each term separately:
gx(x, y) = d/dx ([tex]e^{x^{2[/tex]) + d/dx (y²) + d/dx (-12)
Differentiating each term:
gx(x, y) = 2x[tex]e^{x^{2[/tex] + 0 + 0
Simplifying the expression, we have:
gx(x, y) = 2x[tex]e^{x^{2[/tex]
b) To find gy, we differentiate g(x, y) with respect to y while treating x as a constant:
gy(x, y) = d/dy ([tex]e^{x^{2[/tex] + y² - 12)
Taking the derivative of each term separately:
gy(x, y) = d/dy ([tex]e^{x^{2[/tex]) + d/dy (y²) + d/dy (-12)
Differentiating each term:
gy(x, y) = 0 + 2y + 0
Simplifying the expression, we have:
gy(x, y) = 2y
Now, let's evaluate the partial derivatives at the given points.
a) Evaluating gx(0, 1):
Substituting x = 0 into gx(x, y):
gx(0, 1) = 2(0)[tex]e^{(0)^{2[/tex]
= 0
Therefore, gx(0, 1) = 0.
b) Evaluating gy(0, 1):
Substituting x = 0 into gy(x, y):
gy(0, 1) = 2(1)
= 2
Therefore, gy(0, 1) = 2.
13. For the function f(x, y) = ln(x - y) + x³y²:
a) To find fx, we differentiate f(x, y) with respect to x while treating y as a constant:
fx(x, y) = d/dx (ln(x - y) + x³y²)
Differentiating each term separately:
fx(x, y) = 1/(x - y) + 3x²y² + 0
Simplifying the expression, we have:
fx(x, y) = 1/(x - y) + 3x²y²
b) To find fy, we differentiate f(x, y) with respect to y while treating x as a constant:
fy(x, y) = d/dy (ln(x - y) + x³y²)
Differentiating each term separately:
fy(x, y) = -1/(x - y) + 0 + 2x³y
Simplifying the expression, we have:
fy(x, y) = -1/(x - y) + 2x³y
Now, let's evaluate the partial derivatives at the given points.
a) Evaluating fx(2, 1):
Substituting x = 2 into fx(x, y):
fx(2, 1) = 1/(2 - 1) + 3(2)²(1)
= 1 + 12
= 13
Therefore, fx(2, 1) = 13.
b) Evaluating fy(2, 1):
Substituting x = 2 into fy(x, y):
fy(2, 1) = -1/(2 - 1) + 2(2)³(1)
= -1 + 16
= 15
Therefore, fy(2, 1) = 15.
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