3. A rectangle is drawn inside the region enclosed by the parabola y = 24 - x and the horizontal axis. One of its sides is on the horizontal axis and the vertical sides pass through the points (-r,0) and (r,0) as shown in the figure below. Clearly, 0 < x < v24 %3D (-x,0) (x,0) (a) Verify that the area A(r) of the rectangle is A(x) = 48r – 2x3. Write down your steps. %3D (b) Complete the table below then describe how the area changes as x increases from 0 to 24 Value of z 1 1.5 2 3 3.5 4 4.5 Area A(r) of the rectangle (c) Use the derivative of A(z) to determine the value of x that gives the largest possible area of the rectangle. What is that largest possible value?

Calculus: Early Transcendentals
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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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3. A rectangle is drawn inside the region enclosed by the parabola y = 24 - a2 and the horizontal axis.
One of its sides is on the horizontal axis and the vertical sides pass through the points (-a,0) and
(x, 0) as showm in the figure below. Clearly, 0 <x < v24
(-х,0)
(x,0)
(a) Verify that the area A(x) of the rectangle is A(x) = 48x – 2x3. Write down your steps.
(b) Complete the table below then describe how the area changes as increases from 0 to /24
Value
of r
1
1.5
2
3.5
4
4.5
Area A(x) of
the rectangle
(c) Use the derivative of A(1) to determine the value of x that gives the largest possible area of the
rectangle. What is that largest possible value?
(99+)
Transcribed Image Text:3. A rectangle is drawn inside the region enclosed by the parabola y = 24 - a2 and the horizontal axis. One of its sides is on the horizontal axis and the vertical sides pass through the points (-a,0) and (x, 0) as showm in the figure below. Clearly, 0 <x < v24 (-х,0) (x,0) (a) Verify that the area A(x) of the rectangle is A(x) = 48x – 2x3. Write down your steps. (b) Complete the table below then describe how the area changes as increases from 0 to /24 Value of r 1 1.5 2 3.5 4 4.5 Area A(x) of the rectangle (c) Use the derivative of A(1) to determine the value of x that gives the largest possible area of the rectangle. What is that largest possible value? (99+)
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