Homework Answers
9. U(X, Y) =XY
a) Marginal utility of X = dU/dX
= d(XY)/dX
= Y
b) Marginal utility of Y = dU/dY
= d(XY)/dY
= X
c) Marginal rate of substitution of X for Y = - Marginal utility of X / Marginal utility of Y
= -Y/X
d) Equation for slope of indifference curves = MRS
= - MU of X / MU of Y
= - dU/dX ÷ dU/dY
= - dU/dX * dY/dU
= - dY/dX
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this is the page prior to the original picture. there is no
other information provided. i believe that i am supposed to fill
out the table as a part of the problem
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