(a) Draw two typical curves y = f ( x ) and y = g ( x ) , where f ( x ) ≥ g(x) for a ≤ x ≤ b. 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 c ≤ y ≤ d.

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Single Variable Calculus: Early Tr...

8th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781305270343
BuyFind

Single Variable Calculus: Early Tr...

8th Edition
James Stewart
Publisher: Cengage Learning
ISBN: 9781305270343

Solutions

Chapter
Section
Chapter 6, Problem 1RCC
Textbook Problem

(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.

Expert Solution

(a)

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.

Expert Solution

(b)

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 - Sketch the region enclosed by the given curves....Ch. 6.1 - Sketch the region enclosed by the given curves....Ch. 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 - Sketch the region enclosed by the given curves and...Ch. 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 - Sketch the region enclosed by the given curves and...Ch. 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 - Sketch the region enclosed by the given curves and...Ch. 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 - Sketch the region enclosed by the given curves and...Ch. 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 - Sketch the region enclosed by the given curves and...Ch. 6.1 - Sketch the region enclosed by the given curves and...Ch. 6.1 - The graphs of two functions are shown with the...Ch. 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 - Sketch the region enclosed by the given curves and...Ch. 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 - Evaluate the integral and interpret it as the area...Ch. 6.1 - Evaluate the integral and interpret it as the area...Ch. 6.1 - Use a graph to find approximate x-coordinates of...Ch. 6.1 - Use a graph to find approximate x-coordinates of...Ch. 6.1 - Use a graph to find approximate x-coordinates of...Ch. 6.1 - Use a graph to find approximate x-coordinates of...Ch. 6.1 - Graph the region between the curves and use your...Ch. 6.1 - Graph the region between the curves and use your...Ch. 6.1 - Graph the region between the curves and use your...Ch. 6.1 - Graph the region between the curves and use your...Ch. 6.1 - Sketch the region in the xy-plane defined by the...Ch. 6.1 - Racing cars driven by Chris and Kelly are side by...Ch. 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 - If the birth rate of a population is b(t) =...Ch. 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 - The figure shows graphs of the marginal revenue...Ch. 6.1 - The curve with equation y2 = x2(x + 3) is called...Ch. 6.1 - Find the area of the region bounded by the...Ch. 6.1 - Find the number b such that the line y = b divides...Ch. 6.1 - (a) Find the number a such that the line x = a...Ch. 6.1 - Find the values of c such that the area of the...Ch. 6.1 - Suppose that 0 c /2. For what value of c is the...Ch. 6.1 - For what values of m do the line y = mx and the...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 - 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 - 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 - 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 - 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 - 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 - Find the volume of the solid obtained by rotating...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 - 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 - 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 - Refer to the figure and find the volume generated...Ch. 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 - 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 - Use a graph to find approximate x-coordinates of...Ch. 6.2 - Use a graph to find approximate x-coordinates of...Ch. 6.2 - Each integral represents the volume of a solid....Ch. 6.2 - Each integral represents the volume of a solid....Ch. 6.2 - Each integral represents the volume of a solid....Ch. 6.2 - Each integral represents the volume of a solid....Ch. 6.2 - A CAT scan produces equally spaced cross-sectional...Ch. 6.2 - A log 10 m long is cut at 1-meter intervals and...Ch. 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 - Find the volume of the described solid S. A...Ch. 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 - 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. A...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The base...Ch. 6.2 - Find the volume of the described solid S. The...Ch. 6.2 - The base of S is a circular disk with radius r....Ch. 6.2 - (a) Set up an integral for the volume of a solid...Ch. 6.2 - Solve Example 9 taking cross-sections to be...Ch. 6.2 - (a) Cavalieris Principle states that if a family...Ch. 6.2 - Find the volume common to two circular cylinders,...Ch. 6.2 - Find the volume common to two spheres, each with...Ch. 6.2 - A bowl is shaped like a hemisphere with diameter...Ch. 6.2 - A hole of radius r is bored through the middle of...Ch. 6.2 - A hole of radius r is bored through the center of...Ch. 6.2 - Some of the pioneers of calculus, such as Kepler...Ch. 6.2 - Suppose that a region has area A and lies above...Ch. 6.3 - Let S be the solid obtained by rotating the region...Ch. 6.3 - Let S be the solid obtained by rotating the region...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Let V be the volume of the solid obtained by...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - Use the method of cylindrical shells to find the...Ch. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - (a) Set up an integral for the volume of the solid...Ch. 6.3 - Use the Midpoint Rule with n = 5 to estimate the...Ch. 6.3 - If the region shown in the figure is rotated about...Ch. 6.3 - Each integral represents the volume of a solid....Ch. 6.3 - Each integral represents the volume of a solid....Ch. 6.3 - Each integral represents the volume of a solid....Ch. 6.3 - Each integral represents the volume of a solid....Ch. 6.3 - Use a graph to estimate the x-coordinates of the...Ch. 6.3 - Use a graph to estimate the x-coordinates of the...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - The region bounded by the given curves is rotated...Ch. 6.3 - Let T be the triangular region with vertices (0,...Ch. 6.3 - Use cylindrical shells to find the volume of the...Ch. 6.3 - Use cylindrical shells to find the volume of the...Ch. 6.3 - Use cylindrical shells to find the volume of the...Ch. 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 - How much work is done when a hoist lifts a 200-kg...Ch. 6.4 - A variable force of 5x2 pounds moves an object...Ch. 6.4 - When a particle is located a distance x meters...Ch. 6.4 - Shown is the graph of a force function (in...Ch. 6.4 - The table shows values of a force function f(x),...Ch. 6.4 - A force of 10 lb is required to hold a spring...Ch. 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 - If the work required to stretch a spring 1 ft...Ch. 6.4 - A spring has natural length 20 cm. Compare the...Ch. 6.4 - If 6 J of work is needed to stretch a spring from...Ch. 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 - Show how to approximate the required work by a...Ch. 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 - Show how to approximate the required work by a...Ch. 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 - 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 - When gas expands in a cylinder with radius r, the...Ch. 6.4 - In a steam engine the pressure P and volume V of...Ch. 6.4 - The kinetic energy KE of an object of mass m...Ch. 6.4 - Suppose that when launching an 800-kg roller...Ch. 6.4 - (a) Newtons Law of Gravitation states that two...Ch. 6.4 - The Great Pyramid of King Khufu was built of...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - Find the average value of the function on the...Ch. 6.5 - (a) Find the average value of f on the given...Ch. 6.5 - (a) Find the average value of f on the given...Ch. 6.5 - (a) Find the average value of f on the given...Ch. 6.5 - (a) Find the average value of f on the given...Ch. 6.5 - If f is continuous and 13f(x)dx=8, show that f...Ch. 6.5 - Find the numbers b such that the average value of...Ch. 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 - In a certain city the temperature (in F) t hours...Ch. 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 - In Example 3.8.1 we modeled the world population...Ch. 6.5 - If a freely falling body starts from rest, then...Ch. 6.5 - Use the result of Exercise 5.5.83 to compute the...Ch. 6.5 - Use the diagram to show that if f is concave...Ch. 6.5 - Prove the Mean Value Theorem for Integrals by...Ch. 6.5 - If fave [a, b] denotes the average value of f on...Ch. 6 - (a) Draw two typical curves y = f(x) and y = g(x),...Ch. 6 - Suppose that Sue runs faster than Kathy throughout...Ch. 6 - (a) Suppose S is a solid with known...Ch. 6 - (a) What is the volume of a cylindrical shell? (b)...Ch. 6 - Suppose that you push a book across a 6-meter-long...Ch. 6 - (a) What is the average value of a function f on...Ch. 6 - Find the area of the region bounded by the given...Ch. 6 - Find the area of the region bounded by the given...Ch. 6 - Find the area of the region bounded by the given...Ch. 6 - Find the area of the region bounded by the given...Ch. 6 - Find the area of the region bounded by the given...Ch. 6 - Find the area of the region bounded by the given...Ch. 6 - Find the volume of the solid obtained by rotating...Ch. 6 - Find the volume of the solid obtained by rotating...Ch. 6 - Find the volume of the solid obtained by rotating...Ch. 6 - Find the volume of the solid obtained by rotating...Ch. 6 - Find the volume of the solid obtained by rotating...Ch. 6 - Set up, but do not evaluate, an integral for the...Ch. 6 - Set up, but do not evaluate, an integral for the...Ch. 6 - Set up, but do not evaluate, an integral for the...Ch. 6 - Find the volumes of the solids obtained by...Ch. 6 - Let be the region in the first quadrant bounded...Ch. 6 - Let be the region bounded by the curves y =...Ch. 6 - Let be the region bounded by the curves y = 1 x2...Ch. 6 - Each integral represents the volume of a solid....Ch. 6 - Each integral represents the volume of a solid....Ch. 6 - Each integral represents the volume of a solid....Ch. 6 - Each integral represents the volume of a solid....Ch. 6 - The base of a solid is a circular disk with radius...Ch. 6 - The base of a solid is the region bounded by the...Ch. 6 - The height of a monument is 20 m. A horizontal...Ch. 6 - (a) The base of a solid is a square with vertices...Ch. 6 - A force of 30 N is required to maintain a spring...Ch. 6 - A 1600-lb elevator is suspended by a 200-ft cable...Ch. 6 - A tank full of water has the shape of a paraboloid...Ch. 6 - A steel tank has the shape of a circular cylinder...Ch. 6 - Find the average value of the function f(t) =...Ch. 6 - (a) Find the average value of the function...Ch. 6 - If f is a continuous function, what is the limit...Ch. 6 - Let 1, be the region bounded by y = x2, y = 0, and...Ch. 6 - (a) Find a positive continuous function f such...Ch. 6 - There is a line through the origin that divides...Ch. 6 - The figure shows a horizontal line y = c...Ch. 6 - A cylindrical glass of radius r and height L is...Ch. 6 - (a) Show that the volume of a segment of height h...Ch. 6 - Archimedes Principle states that the buoyant force...Ch. 6 - Water in an open bowl evaporates at a rate...Ch. 6 - A sphere of radius 1 overlaps a smaller sphere of...Ch. 6 - The figure shows a curve C with the property that,...Ch. 6 - A paper drinking cup filled with water has the...Ch. 6 - A clepsydra, or water clock, is a glass container...Ch. 6 - A cylindrical container of radius r and height L...Ch. 6 - Suppose the graph of a cubic polynomial intersects...Ch. 6 - If the tangent at a point P on the curve y = x3...

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