You must answer the question in this section. A.1 Individuals in a market each have a total budget y to spend on two goods q₁ and q2 at the prices p₁ and p2 respectively. Their preferences are described by the utility function Bq₁(A-92)2, u (91, 92) where A, B > 0 are preference parameters. (a) Show that the quantity demanded of good 2 is f2 (y, P1, P2) Bq₁, = P2' A-B22, P1¹ 0, if q2 ≤ A; if q2 > A; if if A if < P2 P1 - Bp₂ y Bp2 ≤ (1) Assume for parts (b) and (c) that prices are such that individuals consume positive quantities of both goods. (b) Find the expenditure function corresponding to these preferences. (c) Suppose that the price of good 1 is fixed at 1 but the price of good 2 rises from po to p. Show that compensating and equivalent variation are equal to each other and equal to consumer surplus for each individual. Comment. Henceforth, suppose there are N consumers each with the utility described in equation (1) above, A² that p₁=1, and that y > B.
You must answer the question in this section. A.1 Individuals in a market each have a total budget y to spend on two goods q₁ and q2 at the prices p₁ and p2 respectively. Their preferences are described by the utility function Bq₁(A-92)2, u (91, 92) where A, B > 0 are preference parameters. (a) Show that the quantity demanded of good 2 is f2 (y, P1, P2) Bq₁, = P2' A-B22, P1¹ 0, if q2 ≤ A; if q2 > A; if if A if < P2 P1 - Bp₂ y Bp2 ≤ (1) Assume for parts (b) and (c) that prices are such that individuals consume positive quantities of both goods. (b) Find the expenditure function corresponding to these preferences. (c) Suppose that the price of good 1 is fixed at 1 but the price of good 2 rises from po to p. Show that compensating and equivalent variation are equal to each other and equal to consumer surplus for each individual. Comment. Henceforth, suppose there are N consumers each with the utility described in equation (1) above, A² that p₁=1, and that y > B.
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Transcribed Image Text:PART A
You must answer the question in this section.
A.1 Individuals in a market each have a total budget y to spend on two goods q₁ and q2 at the prices p1
and p2 respectively. Their preferences are described by the utility function
u (91, 92)
=
(Bq₁ - (A-92)²,
Bq1,
where A, B > 0 are preference parameters.
(a) Show that the quantity demanded of good 2 is
y
P2
A- B,
0,
f2 (y, P1, P2)
=
if q2 ≤ A;
if q2 > A;
if P2
if A
if <B
Bp₂
(1)
Assume for parts (b) and (c) that prices are such that individuals consume positive quantities of both
goods.
(b) Find the expenditure function corresponding to these preferences.
(c) Suppose that the price of good 1 is fixed at 1 but the price of good 2 rises from po to p. Show
that compensating and equivalent variation are equal to each other and equal to consumer
surplus for each individual. Comment.
Henceforth, suppose there are N consumers each with the utility described in equation (1) above,
that p₁ = 1, and that y > A.
(d) Suppose that the good q2 is supplied by a monopolist with a cost function cQ² where Qis
its total output of good 2. Draw this monopolist's demand, MR and MC curve. Calculate
the monopolist's profit-maximizing prices and quantity and compare them with their perfectly
competitive equivalent values.
(e) Explain why this monopolist does not increase its output without limit as N, the size of its
market, increases. Can regulation of the monopolist solve this problem?
(f) How much would supply increase (and price fall) if another firm entered this market and the
competition was in quantities? (Assume the entrant has the same costs as the incumbent.)
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