b) A firm has an average cost function A(q)= 125/q + q2/16 - 4. where q is the firm′s output. (ii) Hence determine the range of values for which average costs are decreasing.

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter2: Functions
Section2.4: Average Rate Of Change Of A Function
Problem 4.2E: bThe average rate of change of the linear function f(x)=3x+5 between any two points is ________.
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(b) A firm has an average cost function
A(q)= 125/q + q2/16 - 4.

where q is the firm′s output.

(ii) Hence determine the range of values for which average costs are decreasing.

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