Your friend has the following utility unction: U(X,Y) = 10 X + 40 Y – X2-...
Your friend has the following utility unction:
U(X,Y) = 10 X + 40 Y – X2- 3Y2
Where X is her consumption of Redbox movies, with price Px = $1, and Y is her consumption of iTunes, with Py = $2. Income is 48 dollars.
a. Using the Lagrangian approach, derive your friend’s demand equations for Redbox movies and iTunes. That is, find X and Y. (Hint: Substitute the budget constraint in the Lagrangian problem using the given prices and income of 48 dollars)
b. Assume that her income I=$48. How many movies and how many songs will your friend consume?
c. What is the marginal utility of income? That is, find the value of the Lagrange multiplier, lambda, from your work above.
Homework Answers
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Your friend has the following utility unction: U(X,Y) = 10 X + 40 Y – X2-...
1. (5 pts.) If U X13y23, M 120, Px-2, and Py-10, find the utility-maximizing combination of...
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7. A consumer has the following utility function for goods X and Y: U(X,Y) 5XY3 +10...
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1. Suppose a consumer has the utility function over goods x and y u(x, y) =...
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1. Suppose a consumer has the utility function over goods x and y u(x,y) = 3x3 yž (a) Setup the utility maximization problem for this consumer using the general budget con- straint. (2 points) (b) Will the constraint be active/binding? Is the sufficient condition for interior solution satisfied? Prove your answers. (4 points) (c) Solve the utility maximization problem for the Marshallian demand equations x* (Px, Py,m) and y* (Px, Py,m). Show all of your work and circle your final...
i need help with (b) and (c)!!! thank u!!!! Jeanette has the following utility function: U= a*In(x) + b*In(y), where...
i need help with (b) and (c)!!! thank u!!!!
Jeanette has the following utility function: U= a*In(x) + b*In(y), where a+b=1 a) For a given amount of income I, and prices Px. Py, find Jeanette's Marshallian demand functions for X and Y and her indirect utility function. (6 points) b) From now on, you can use the fact that the utility parameters are a=0.2 and b=0.8. Find the Hicksian demand functions and the corresponding expenditure function. (6 points) c) Suppose...
Suppose James derives utility from two goods {x,y}, characterised by the following utility function: $u(x, y)...
Suppose James derives utility from two goods {x,y},
characterised by the following utility function: $u(x, y) =
2sqrt{x} + y$: his wealth is w = 10 let py = 1:
(a) What is his optimal basket if px = 0.50? What is her
utility?
(b) What is his optimal basket and utility if px = 0.20?
(c) Find the substitution effect and the income
effect associated with the price change.
(d) What is the change in consumer
surplus?
Suppose Linda...
1. Suppose a consumer has the utility function over goods x and y u(x,y) = 3x{y}...
1. Suppose a consumer has the utility function over goods x and y u(x,y) = 3x{y} (a) Setup the utility maximization problem for this consumer using the general budget con- straint. (2 points) (b) Will the constraint be active/binding? Is the sufficient condition for interior solution satisfied? Prove your answers. (4 points) (c) Solve the utility maximization problem for the Marshallian demand equations x* (Px. Py,m) and y* (Px.p.m). Show all of your work and circle your final answers. (7...
M 4. Consider the utility maximization problem max U(x,y) = x +y s.t. x + 4y...
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Consumer Theory 13 Ordinary Goods 1. Let U(x, y) = x2/3743, MU2 = 173 MUY =...
Consumer Theory 13 Ordinary Goods 1. Let U(x, y) = x2/3743, MU2 = 173 MUY = 2 x 5 Pa = 6, Py = 3, and M = 30. 2. Let U(x, y) = x2/3y1/3, MUX 17, MUY Px = 6, Py = 3, and M - 30. 3. Let U(x, y) = 2x1/3y2/3, MU, = 2 21/a, Px = 6, Py = 3, and M = 30. 4. Let U(x, y) = 2x4 3y1/3, MUx = * * 78,...
1. (5 pts.) If U X13y23, M 120, Px-2, and Py-10, find the utility-maximizing combination of X and Y using the Lagrangian multiplier. Also find the MRS and the ratio of the prices at the utility-maximizing combination. Show your work on a separate page. a. Units of X b. Units of Y c. MRS d. Px/Py
7. A consumer has the following utility function for goods X and Y: U(X,Y) 5XY3 +10 The consumer faces prices of goods X and Y given by px and py and has an income given by I. (5 marks) Solve for the Demand Equations, X (px,py,I) and Y*(px,py,I) a. b. (5 marks) Calculate the income, own-price and cross-price elasticities of demand for X and Y
1. Suppose a consumer has the utility function over goods x and y u(x, y) = 3x}}} (a) Setup the utility maximization problem for this consumer using the general budget con- straint. (2 points) (b) Will the constraint be active/binding? Is the sufficient condition for interior solution satisfied? Prove your answers. (4 points) (c) Solve the utility maximization problem for the Marshallian demand equations x (Px, py,m) and y* (Px, Py,m). Show all of your work and circle your final...
4. Andy's utility is represented by the function U(X,Y) - XY. His marginal utility of X is MUx = Y. His marginal utility of Y is MUY = . He has income $12. When the prices are Px - 1 and Py -1, Andy's optimal consumption bundle is X* -6 and Y' = 6. When the prices are Px = 1 and P, = 4, Andy's optimal consumption bundle is X** = 6 and Y* 1.5. Suppose the price of...
1. Suppose a consumer has the utility function over goods x and y u(x,y) = 3x3 yž (a) Setup the utility maximization problem for this consumer using the general budget con- straint. (2 points) (b) Will the constraint be active/binding? Is the sufficient condition for interior solution satisfied? Prove your answers. (4 points) (c) Solve the utility maximization problem for the Marshallian demand equations x* (Px, Py,m) and y* (Px, Py,m). Show all of your work and circle your final...
i need help with (b) and (c)!!! thank u!!!!
Jeanette has the following utility function: U= a*In(x) + b*In(y), where a+b=1 a) For a given amount of income I, and prices Px. Py, find Jeanette's Marshallian demand functions for X and Y and her indirect utility function. (6 points) b) From now on, you can use the fact that the utility parameters are a=0.2 and b=0.8. Find the Hicksian demand functions and the corresponding expenditure function. (6 points) c) Suppose...
Suppose James derives utility from two goods {x,y},
characterised by the following utility function: $u(x, y) =
2sqrt{x} + y$: his wealth is w = 10 let py = 1:
(a) What is his optimal basket if px = 0.50? What is her
utility?
(b) What is his optimal basket and utility if px = 0.20?
(c) Find the substitution effect and the income
effect associated with the price change.
(d) What is the change in consumer
surplus?
Suppose Linda...
1. Suppose a consumer has the utility function over goods x and y u(x,y) = 3x{y} (a) Setup the utility maximization problem for this consumer using the general budget con- straint. (2 points) (b) Will the constraint be active/binding? Is the sufficient condition for interior solution satisfied? Prove your answers. (4 points) (c) Solve the utility maximization problem for the Marshallian demand equations x* (Px. Py,m) and y* (Px.p.m). Show all of your work and circle your final answers. (7...
M 4. Consider the utility maximization problem max U(x,y) = x +y s.t. x + 4y = 100. (a) Using the Lagrange method, find the quantities demanded of the two goods. (b) Suppose income increases from 100 to 101. What is the exact increase in the optimal value of U(x, y)? Compare with the value found in (a) for the Lagrange multiplier. (C) Suppose we change the budget constraint to px + y = m, but keep the same utility...
Consumer Theory 13 Ordinary Goods 1. Let U(x, y) = x2/3743, MU2 = 173 MUY = 2 x 5 Pa = 6, Py = 3, and M = 30. 2. Let U(x, y) = x2/3y1/3, MUX 17, MUY Px = 6, Py = 3, and M - 30. 3. Let U(x, y) = 2x1/3y2/3, MU, = 2 21/a, Px = 6, Py = 3, and M = 30. 4. Let U(x, y) = 2x4 3y1/3, MUx = * * 78,...
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