Math

CalculusSingle Variable Calculus: Concepts and Contexts, Enhanced EditionTo Draw: the two typical curves y = f ( x ) and y = g ( x ) . To define: A Riemann sum that approximates the area between the two typical curves with drawing of the corresponding approximating rectangles and exact area between the two typical curves and the expression for the exact area.Start your trial now! First week only $4.99!*arrow_forward*

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4th Edition

James Stewart

Publisher: Cengage Learning

ISBN: 9781337687805

Chapter 6, Problem 1RCC

(a)

To determine

**To Draw:** the two typical curves

**To define:** A Riemann sum that approximates the area between the two typical curves with drawing of the corresponding approximating rectangles and exact area between the two typical curves and the expression for the exact area.

Expert Solution

Consider the two curves **.**

Here, the top curve function is

Assume *f* and *g* are continuous function and

Here, the lower limit is *a* and the upper limit is *b*.

Show the approximate *i*^{th} strip rectangle with base *a* and *b*.

Sketch the two typical curves

Refer to figure 1.

The two typical curves *i*^{th} strip rectangle is drawn.

The expression for the exact area is

Divide the area between the two typical curves into *n* strips of equal width and take the entire sample points to be right endpoints, in which

Sketch thecorresponding approximating rectangles as shown in Figure 2.

The better and better approximation occurs in *A*, between the two typical curves is the sum of the areas of the corresponding approximating rectangles as shown below.

Thus, the Riemann sum with the sketch of corresponding approximating rectangles and the exact area between the two typical curves shown.

Therefore, the approximation of the area between the two typical curves using Riemann sum with the sketch of the corresponding approximating rectangles and the sum of the areas corresponding approximating rectangles is the exact area.

(b)

To determine

**To Draw:** The two typical curves with the changing the situation as

**To define:** The situation if the curves changes from

The expression for the exact area is

Expert Solution

Consider the two curves

Here, the right curve function is

Assume *f* and *g* are continuous function and

Here, the bottom limit is *c* and the top limit is *d*.

Sketch the two typical curves

Thus, the two typical curves

Normally the height calculated from the top function minus bottom one and integrating from left to right. Instead of normal calculation, use “right minus left” and integrating from bottom to top. Therefore the exact area, *A* written as

Therefore, the changes of the situation if the curves have equations

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