A consumer has the following utility function: U(x,y)=x(y+1), where x and y are quantities of two consumption goods whose prices are Px and Py. respectively. The consumer also has a budget of B. Therefore, the Lagrangian for this consumer is x(y + 1) + X(B - P - Pyy) (a) Verify that this is a maximum by checking the second-order conditions. By substituting x* and y* into the utility function, find an expression for the indirect utility function U* = U(Pr, Pŋ, B) E = E(Pr, Py, U*) and derive an expression for the expenditure function (b) This problem could be recast as the following dual problem Min P+Pyy Subject to x(y + 1) = U* Find the values of x and y that solve this minimization problem and show that the values of x and y are equal to the partial derivatives of the expenditure function, E/OP, and E/OP, respectively.

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Chapter1: Making Economics Decisions
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A consumer has the following utility function: U(x.y)=x(y+1), where x and y are quantities of two consumption goods whose prices are Px and Py,
respectively. The consumer also has a budget of B. Therefore, the Lagrangian for this consumer is
x(y + 1) + X(B – Prx – Py)
(a) Verify that this is a maximum by checking the second-order conditions. By substituting x* and y* into the utility function, find an expression for
the indirect utility function
U* = U(Pr, Py, B)
and derive an expression for the expenditure function
E = E(Pr, Py, U*)
(b) This problem could be recast as the following dual problem
Min Prx + Pyy
Subject to æ(y + 1) = U*
Find the values of x and y that solve this minimization problem and show that the values of x and y are equal to the partial derivatives of the
expenditure function, ðE/ðP, and ðE/ðP, respectively.
Transcribed Image Text:A consumer has the following utility function: U(x.y)=x(y+1), where x and y are quantities of two consumption goods whose prices are Px and Py, respectively. The consumer also has a budget of B. Therefore, the Lagrangian for this consumer is x(y + 1) + X(B – Prx – Py) (a) Verify that this is a maximum by checking the second-order conditions. By substituting x* and y* into the utility function, find an expression for the indirect utility function U* = U(Pr, Py, B) and derive an expression for the expenditure function E = E(Pr, Py, U*) (b) This problem could be recast as the following dual problem Min Prx + Pyy Subject to æ(y + 1) = U* Find the values of x and y that solve this minimization problem and show that the values of x and y are equal to the partial derivatives of the expenditure function, ðE/ðP, and ðE/ðP, respectively.
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