Step 1 The area of the rectangle is equal to the product of the length and the width. It is given that the area of rectangle is increasing at the rate of 48 square centimeters per second. It is said the length of the rectangle is always equal to the square of its width. Let the length is l and the width is b then, 1 = b? And, A = lb = l•i A = 12

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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How did it come up with a square root of l? (The blue line) 

Step 1
The area of the rectangle is equal to the product of the length and the width.
It is given that the area of rectangle is increasing at the rate of 48 square centimeters per
second.
It is said the length of the rectangle is always equal to the square of its width.
Let the length is l and the width is b then,
1 = b?
And,
A = lb
= l•i
A = 12
Transcribed Image Text:Step 1 The area of the rectangle is equal to the product of the length and the width. It is given that the area of rectangle is increasing at the rate of 48 square centimeters per second. It is said the length of the rectangle is always equal to the square of its width. Let the length is l and the width is b then, 1 = b? And, A = lb = l•i A = 12
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