A consumer has utility (₁,₂)=₁+122. Suppose that, because of a shortage of good 1, the government imposes a strict upper limit of 7₁ on the quantity of good 1 that the consumer can consume. Assume throughout the following that w>p2. z(p, w) = 2p1 (+2², 17722) if 102 ≤7₂, (7₁,-²) otherwise. P2

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A consumer has utility
u(x₁, x2) = ₁ + x122.
Suppose that, because of a shortage of good 1, the government imposes a strict upper limit
of on the quantity of good 1 that the consumer can consume. Assume throughout the
following that w > P2.
x(p, w) =
v(p, w) =
w+P₂ W-P₂
2p1
F1.
w+p2
2p₁
The interior solution is indeed a mar because of converity and monotonicity.
(c) Find the consumer's expenditure function.
Solution: Using the answer to part (b), the indirect utility is
1+
w+P₂
127-12) if w+1² < 31.
otherwise.
"
10-Pi
P2
w+P2
2P1
(1
( ₁ (1+²)
w-P2
2p2
1 +22²) i
2p₂
| Suppose that p₁ = P2, w = 3p₁, and F₁ = 1. If the government removes the restriction
on consumption of good 1, the price of good 1 will rise from pi to p₁, and p2 and w will
remain the same. For what values of p₁ and p does the consumer prefer that the limit
remain in place?
2p₁
Solution: For the given values, >₁. Hence with the restriction, the consumer
chooses x₁ = 1 and r2 = 2 giving utility 3. Without the restriction, the consumer chooses
according to the interior solution we found in part (b), giving utility
≤ 1,
otherwise.
4p1
P₁
Therefore, she (strictly) prefers that the limit remain if and only if 3p > 4p₁.
Transcribed Image Text:A consumer has utility u(x₁, x2) = ₁ + x122. Suppose that, because of a shortage of good 1, the government imposes a strict upper limit of on the quantity of good 1 that the consumer can consume. Assume throughout the following that w > P2. x(p, w) = v(p, w) = w+P₂ W-P₂ 2p1 F1. w+p2 2p₁ The interior solution is indeed a mar because of converity and monotonicity. (c) Find the consumer's expenditure function. Solution: Using the answer to part (b), the indirect utility is 1+ w+P₂ 127-12) if w+1² < 31. otherwise. " 10-Pi P2 w+P2 2P1 (1 ( ₁ (1+²) w-P2 2p2 1 +22²) i 2p₂ | Suppose that p₁ = P2, w = 3p₁, and F₁ = 1. If the government removes the restriction on consumption of good 1, the price of good 1 will rise from pi to p₁, and p2 and w will remain the same. For what values of p₁ and p does the consumer prefer that the limit remain in place? 2p₁ Solution: For the given values, >₁. Hence with the restriction, the consumer chooses x₁ = 1 and r2 = 2 giving utility 3. Without the restriction, the consumer chooses according to the interior solution we found in part (b), giving utility ≤ 1, otherwise. 4p1 P₁ Therefore, she (strictly) prefers that the limit remain if and only if 3p > 4p₁.
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