The function f(x) = ᴫx2 describes the area of a circle, f(x), in square inches, whose radius measures x inches. If the radius is changing, Solve, a. Find the average rate of change of the area with respect to the radius as the radius changes from 4 inches to 4.1 inches and from 4 inches to 4.01 inches. b. Find the instantaneous rate of change of the area with respect to the radius when the radius is 4 inches. (express answers in terms of ᴫ).

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.7: Applications
Problem 13EQ
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The function f(x) = ᴫx2 describes the area of a circle, f(x), in square inches, whose radius measures x inches. If the radius is changing, Solve, a. Find the average rate of change of the area with respect to the radius as the radius changes from 4 inches to 4.1 inches and from 4 inches to 4.01 inches. b. Find the instantaneous rate of change of the area with respect to the radius when the radius is 4 inches. (express answers in terms of ᴫ).

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