Chapter 11.2, Problem 4CP

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11th Edition

Ronald J. Harshbarger + 1 other

ISBN: 9781305108042

Textbook Problem

If the sales of a product are given by
*x* is the number of days after the end of an advertising campaign, what is the rate of change in sales 20 days after the end of the campaign?

To determine

**To calculate:** The rate of change in the sales of the product, 20 days after the end of the advertisement campaign.

Explanation

**Given Information:**

The sales of a product are represented by the function

The number of days after the end of an advertisement campaign for the product is represented by *x*. It has been 20 days after the end of the campaign.

**Formula used:**

If

Where,

According to the property of derivatives, if

According to the power rule of differentiation,

**Calculation:**

Consider the sales function provided,

Differentiate both sides with respect to *x*,

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