E. A producer has two production processes, both using a single input, r, and both producing the same output, y. The first one produces output according to fi(r1) = 120r, the second one produces output according to fa(x2) = 10r2. The producer is in a competitive industry, and takes as given p, the price of y, and w, the price of r. E.1. Give the firm's cost function. E.2. Give the range of p's and w's for which the firm's supply function can be found, and explain why it cannot be found outside of that range. E.3. Give the firm's supply function, its input demand function, and its profit function over the range where these are defined. E.4. Using the envelope theorem, give the derivative of the firm's profit function with respect to p and with respect to w.

Microeconomic Theory
12th Edition
ISBN:9781337517942
Author:NICHOLSON
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Chapter2: Mathematics For Microeconomics
Section: Chapter Questions
Problem 2.8P
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E. A producer has two production processes, both using a single input, r, and both producing the
same output, y. The first one produces output according to fi(21) = 120z, the second one
produces output according to fa(r2) = 10r. The producer is in a competitive industry, and takes
as given p, the price of y, and w, the price of r.
E.1. Give the firm's cost function.
1/3
E.2. Give the range of p's and w's for which the firm's supply function can be found, and explain
why it cannot be found outside of that range.
E.3. Give the firm's supply function, its input demand function, and its profit function over the
range where these are defined.
E.4. Using the envelope theorem, give the derivative of the firm's profit function with respect to
p and with respect to w.
Transcribed Image Text:E. A producer has two production processes, both using a single input, r, and both producing the same output, y. The first one produces output according to fi(21) = 120z, the second one produces output according to fa(r2) = 10r. The producer is in a competitive industry, and takes as given p, the price of y, and w, the price of r. E.1. Give the firm's cost function. 1/3 E.2. Give the range of p's and w's for which the firm's supply function can be found, and explain why it cannot be found outside of that range. E.3. Give the firm's supply function, its input demand function, and its profit function over the range where these are defined. E.4. Using the envelope theorem, give the derivative of the firm's profit function with respect to p and with respect to w.
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