Single Variable Calculus: Early Transcendentals, Volume I
Single Variable Calculus: Early Transcendentals, Volume I
8th Edition
ISBN: 9781305270343
Author: James Stewart
Publisher: Cengage Learning
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Textbook Question
Chapter 6, Problem 1RCC

(a) Draw two typical curves y = f(x) and y = g(x), where f(x) ≥ g(x) for axb. Show how to approximate the area between these curves by a Riemann sum and sketch the corresponding approximating rectangles. Then write an expression for the exact area.

(b) Explain how the situation changes if the curves have equations x = f(y) and x = g(y), where f(y) ≥ g(y) for cyd.

(a)

Expert Solution
Check Mark
To determine

To 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.

Explanation of Solution

Consider the two curves y=f(x) and y=g(x).

Here, the top curve function is f(x) and the bottom curve function is g(x).

Assume f and g are continuous function and f(x)g(x) for axb.

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

Show the approximate ith strip rectangle with base Δx and height f(xi*)g(xi*) in the region between a and b.

Sketch the two typical curves y=f(x) and y=g(x) as shown in Figure 1.

Single Variable Calculus: Early Transcendentals, Volume I, Chapter 6, Problem 1RCC , additional homework tip  1

Refer to figure 1.

The two typical curves y=f(x) and y=g(x) showing the approximate ith strip rectangle is drawn.

The expression for the exact area is A=limni=1n[f(xi*)g(xi*)]Δx.

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 xi* as xi. Hence the Riemann sum is

i=1n[f(xi*)g(xi*)]Δx

Sketch thecorresponding approximating rectangles as shown in Figure 2.

Single Variable Calculus: Early Transcendentals, Volume I, Chapter 6, Problem 1RCC , additional homework tip  2

The better and better approximation occurs in n. Hencethe exact areaA, between the two typical curves is the sum of the areas of the corresponding approximating rectangles as shown below.

A=limni=1n[f(xi*)g(xi*)]Δx

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)

Expert Solution
Check Mark
To determine

To Draw: The two typical curves with the changing the situation as x=f(y) and x=g(y).

To define: The situation if the curves changes from y=f(x) and y=g(x) to x=f(y) and x=g(y) the expression for the exact area.

The expression for the exact area is A=cd[f(y)g(y)]dy.

Explanation of Solution

Consider the two curves x=f(y) and x=g(y).

Here, the right curve function is f(y) and the left curve function is g(y).

Assume f and g are continuous function and f(y)g(y) for cyd.

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

Sketch the two typical curves x=f(y) and x=g(y) is shown in Figure 3.

Single Variable Calculus: Early Transcendentals, Volume I, Chapter 6, Problem 1RCC , additional homework tip  3

Thus, the two typical curves y=f(x) and y=g(x) are drawn.

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

A=cd[f(y)g(y)]dy

Therefore, the changes of the situation if the curves have equations x=f(y) and x=g(y) is explained.

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Chapter 6 Solutions

Single Variable Calculus: Early Transcendentals, Volume I

Ch. 6.1 - Prob. 11ECh. 6.1 - Prob. 12ECh. 6.1 - Prob. 13ECh. 6.1 - Prob. 14ECh. 6.1 - Prob. 15ECh. 6.1 - Prob. 16ECh. 6.1 - Prob. 17ECh. 6.1 - Prob. 18ECh. 6.1 - Prob. 19ECh. 6.1 - Sketch the region enclosed by the given curves and...Ch. 6.1 - Prob. 21ECh. 6.1 - Sketch the region enclosed by the given curves and...Ch. 6.1 - Prob. 23ECh. 6.1 - Prob. 24ECh. 6.1 - Prob. 25ECh. 6.1 - Sketch the region enclosed by the given curves and...Ch. 6.1 - Sketch the region enclosed by the given curves and...Ch. 6.1 - Prob. 28ECh. 6.1 - Prob. 29ECh. 6.1 - Prob. 30ECh. 6.1 - Prob. 31ECh. 6.1 - Prob. 32ECh. 6.1 - Use calculus to find the area of the triangle with...Ch. 6.1 - Use calculus to find the area of the triangle with...Ch. 6.1 - Prob. 35ECh. 6.1 - Evaluate the integral and interpret it as the area...Ch. 6.1 - Prob. 37ECh. 6.1 - Prob. 38ECh. 6.1 - Prob. 39ECh. 6.1 - Prob. 40ECh. 6.1 - Prob. 41ECh. 6.1 - Prob. 42ECh. 6.1 - Prob. 43ECh. 6.1 - Prob. 44ECh. 6.1 - Sketch the region in the xy-plane defined by the...Ch. 6.1 - Prob. 47ECh. 6.1 - The widths (in meters) of a kidney-shaped swimming...Ch. 6.1 - A cross-section of an airplane wing is shown....Ch. 6.1 - Prob. 50ECh. 6.1 - In Example 5, we modeled a measles pathogenesis...Ch. 6.1 - The rates at which rain fell, in inches per hour,...Ch. 6.1 - Two cars, A and B, start side by side and...Ch. 6.1 - Prob. 54ECh. 6.1 - Prob. 55ECh. 6.1 - Prob. 56ECh. 6.1 - Prob. 57ECh. 6.1 - Prob. 58ECh. 6.1 - Prob. 59ECh. 6.1 - Prob. 60ECh. 6.1 - Prob. 61ECh. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Prob. 2ECh. 6.2 - Prob. 3ECh. 6.2 - Prob. 4ECh. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Prob. 6ECh. 6.2 - Prob. 7ECh. 6.2 - Prob. 8ECh. 6.2 - Prob. 9ECh. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Prob. 13ECh. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Prob. 15ECh. 6.2 - Find the volume of the solid obtained by rotating...Ch. 6.2 - Prob. 17ECh. 6.2 - Prob. 18ECh. 6.2 - Refer to the figure and find the volume generated...Ch. 6.2 - Refer to the figure and find the volume generated...Ch. 6.2 - Refer to the figure and find the volume generated...Ch. 6.2 - Refer to the figure and find the volume generated...Ch. 6.2 - Prob. 23ECh. 6.2 - Prob. 24ECh. 6.2 - Prob. 25ECh. 6.2 - Prob. 26ECh. 6.2 - Prob. 27ECh. 6.2 - Prob. 28ECh. 6.2 - Prob. 29ECh. 6.2 - Prob. 30ECh. 6.2 - Prob. 31ECh. 6.2 - Prob. 32ECh. 6.2 - Set up an integral for the volume of the solid...Ch. 6.2 - Set up an integral for the volume of the solid...Ch. 6.2 - Prob. 35ECh. 6.2 - Prob. 36ECh. 6.2 - Prob. 39ECh. 6.2 - Prob. 40ECh. 6.2 - Each integral represents the volume of a solid....Ch. 6.2 - Prob. 42ECh. 6.2 - A CAT scan produces equally spaced cross-sectional...Ch. 6.2 - Prob. 44ECh. 6.2 - (a) If the region shown in the figure is rotated...Ch. 6.2 - Find the volume of the described solid S. A right...Ch. 6.2 - Prob. 48ECh. 6.2 - Find the volume of the described solid S. A cap of...Ch. 6.2 - Find the volume of the described solid S. A...Ch. 6.2 - Prob. 51ECh. 6.2 - Find the volume of the described solid S. A...Ch. 6.2 - Find the volume of the described solid S. A...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Prob. 55ECh. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Prob. 57ECh. 6.2 - Prob. 58ECh. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Prob. 60ECh. 6.2 - Prob. 61ECh. 6.2 - Prob. 62ECh. 6.2 - Prob. 63ECh. 6.2 - Prob. 64ECh. 6.2 - Prob. 65ECh. 6.2 - Find the volume common to two circular cylinders,...Ch. 6.2 - Prob. 67ECh. 6.2 - A bowl is shaped like a hemisphere with diameter...Ch. 6.2 - Prob. 69ECh. 6.2 - Prob. 70ECh. 6.2 - Some of the pioneers of calculus, such as Kepler...Ch. 6.2 - Prob. 72ECh. 6.3 - Let S be the solid obtained by rotating the region...Ch. 6.3 - Prob. 2ECh. 6.3 - Prob. 3ECh. 6.3 - Prob. 4ECh. 6.3 - Prob. 5ECh. 6.3 - Prob. 6ECh. 6.3 - Prob. 7ECh. 6.3 - Prob. 8ECh. 6.3 - Prob. 9ECh. 6.3 - Prob. 10ECh. 6.3 - Prob. 11ECh. 6.3 - Prob. 12ECh. 6.3 - Prob. 13ECh. 6.3 - Prob. 14ECh. 6.3 - Prob. 15ECh. 6.3 - Prob. 16ECh. 6.3 - Prob. 17ECh. 6.3 - Prob. 18ECh. 6.3 - Prob. 19ECh. 6.3 - Prob. 20ECh. 6.3 - Prob. 21ECh. 6.3 - Prob. 22ECh. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - Prob. 24ECh. 6.3 - Prob. 25ECh. 6.3 - Prob. 26ECh. 6.3 - Prob. 27ECh. 6.3 - If the region shown in the figure is rotated about...Ch. 6.3 - Prob. 29ECh. 6.3 - Prob. 30ECh. 6.3 - Prob. 31ECh. 6.3 - Prob. 32ECh. 6.3 - Prob. 33ECh. 6.3 - Prob. 34ECh. 6.3 - Prob. 37ECh. 6.3 - Prob. 38ECh. 6.3 - Prob. 39ECh. 6.3 - Prob. 40ECh. 6.3 - Prob. 41ECh. 6.3 - Prob. 42ECh. 6.3 - Prob. 43ECh. 6.3 - Prob. 44ECh. 6.3 - Prob. 45ECh. 6.3 - Prob. 46ECh. 6.3 - Prob. 47ECh. 6.3 - Use cylindrical shells to find the volume of the...Ch. 6.4 - A 360-lb gorilla climbs a tree to a height of 20...Ch. 6.4 - Prob. 2ECh. 6.4 - Prob. 3ECh. 6.4 - Prob. 4ECh. 6.4 - Prob. 5ECh. 6.4 - Prob. 6ECh. 6.4 - Prob. 7ECh. 6.4 - A spring has a natural length of 40 cm. If a 60-N...Ch. 6.4 - Suppose that 2 J of work is needed to stretch a...Ch. 6.4 - Prob. 10ECh. 6.4 - Prob. 11ECh. 6.4 - Prob. 12ECh. 6.4 - Show how to approximate the required work by a...Ch. 6.4 - Prob. 14ECh. 6.4 - Show how to approximate the required work by a...Ch. 6.4 - Prob. 16ECh. 6.4 - Prob. 17ECh. 6.4 - Prob. 18ECh. 6.4 - Prob. 19ECh. 6.4 - Prob. 20ECh. 6.4 - Show how to approximate the required work by a...Ch. 6.4 - Show how to approximate the required work by a...Ch. 6.4 - A tank is full of water. Find the work required to...Ch. 6.4 - A tank is full of water. Find the work required to...Ch. 6.4 - A tank is full of water. Find the work required to...Ch. 6.4 - A tank is full of water. Find the work required to...Ch. 6.4 - Suppose that for the tank in Exercise 23 the pump...Ch. 6.4 - Solve Exercise 24 if the tank is half full of oil...Ch. 6.4 - Prob. 29ECh. 6.4 - Prob. 30ECh. 6.4 - Prob. 31ECh. 6.4 - Prob. 32ECh. 6.4 - Prob. 33ECh. 6.4 - Prob. 34ECh. 6.5 - Prob. 1ECh. 6.5 - Prob. 2ECh. 6.5 - Find the average value of the function on the...Ch. 6.5 - Prob. 4ECh. 6.5 - Find the average value of the function on the...Ch. 6.5 - Prob. 6ECh. 6.5 - Prob. 7ECh. 6.5 - Find the average value of the function on the...Ch. 6.5 - Prob. 9ECh. 6.5 - Prob. 10ECh. 6.5 - Prob. 11ECh. 6.5 - (a) Find the average value of f on the given...Ch. 6.5 - Prob. 13ECh. 6.5 - Prob. 14ECh. 6.5 - Find the average value of f on [0, 8].Ch. 6.5 - The velocity graph of an accelerating car is...Ch. 6.5 - Prob. 17ECh. 6.5 - The velocity v of blood that flows in a blood...Ch. 6.5 - The linear density in a rod 8 m long is...Ch. 6.5 - (a) A cup of coffee has temperature 95C and takes...Ch. 6.5 - Prob. 21ECh. 6.5 - Prob. 22ECh. 6.5 - Prob. 23ECh. 6.5 - Use the diagram to show that if f is concave...Ch. 6.5 - Prob. 25ECh. 6.5 - Prob. 26ECh. 6 - (a) Draw two typical curves y = f(x) and y = g(x),...Ch. 6 - Prob. 2RCCCh. 6 - Prob. 3RCCCh. 6 - Prob. 4RCCCh. 6 - Prob. 5RCCCh. 6 - (a) What is the average value of a function f on...Ch. 6 - Prob. 1RECh. 6 - Prob. 2RECh. 6 - Prob. 3RECh. 6 - Prob. 4RECh. 6 - Find the area of the region bounded by the given...Ch. 6 - Prob. 6RECh. 6 - Prob. 7RECh. 6 - Prob. 8RECh. 6 - Prob. 9RECh. 6 - Prob. 10RECh. 6 - Prob. 11RECh. 6 - Prob. 12RECh. 6 - Prob. 13RECh. 6 - Prob. 14RECh. 6 - Prob. 15RECh. 6 - Prob. 16RECh. 6 - Prob. 17RECh. 6 - Prob. 18RECh. 6 - Prob. 19RECh. 6 - Prob. 20RECh. 6 - Each integral represents the volume of a solid....Ch. 6 - Each integral represents the volume of a solid....Ch. 6 - Prob. 23RECh. 6 - Prob. 24RECh. 6 - The height of a monument is 20 m. A horizontal...Ch. 6 - Prob. 26RECh. 6 - Prob. 27RECh. 6 - Prob. 28RECh. 6 - Prob. 29RECh. 6 - A steel tank has the shape of a circular cylinder...Ch. 6 - Prob. 31RECh. 6 - Prob. 32RECh. 6 - Prob. 33RECh. 6 - Prob. 34RECh. 6 - (a) Find a positive continuous function f such...Ch. 6 - Prob. 2PCh. 6 - The figure shows a horizontal line y = c...Ch. 6 - A cylindrical glass of radius r and height L is...Ch. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - The figure shows a curve C with the property that,...Ch. 6 - Prob. 10PCh. 6 - Prob. 11PCh. 6 - A cylindrical container of radius r and height L...Ch. 6 - Prob. 13PCh. 6 - Prob. 15P

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