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Economics 11: Problem set 3 SUMMER 2026 UCLA
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10

May 2026

2025/2026
Problem 1 Suppose that an individual with income I cares about two goods, X and Y . The prices of the two goods are pX and pY . The individual has the utility function U(X, Y ) = X 2 5 Y 3 5 . (a) Derive the Marshallian demands for the two goods. (b) Find the indirect utility function. Solution (a) To derive the Marshallian demands, we use the Lagrangian method. The budget constraint is pXX + pY Y = I, which we can rewrite as I − pXX − pY Y = 0. We set up the Lagrangian funct...
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ECON 103L Economics 11: Problem Set 6 SPRING 2026 UCLA
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9

May 2026

2025/2026
Jeff consumes burrito bowls (B) and chicken tenders (C). His Marshallian demand for burrito bowls is B ∗ = I 0.4p 0.3 C 5p 0.7 B (a) Find and interpret the income elasticity of demand for burrito bowls (eB,I ) and interpret the value. Are burrito bowls an inferior or normal good? (b) Find the own price elasticity of demand for burrito bowls (eB,pB ) and interpret the value. Does the own price elasticity of demand for burrito bowls depend on the value of pB? (c) Find the cross p...
Oldspice
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