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8th Edition

James Stewart

Publisher: Cengage Learning

ISBN: 9781305266643

Chapter 15.7, Problem 25E

Textbook Problem

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Use cylindrical coordinates.

**25**. (a) Find the volume of the region *E* that lies between the paraboloid z = 24 - *x ^{2} - y^{2}* and the cone

(b) Find the centroid of *E* (the center of mass in the case where the density is constant).

(a)

To determine

**To find:** The volume of the given solid by using cylindrical coordinates.

**Given:**

The region *E* lies between the paraboloid

**Formula used:**

If
*E* given by

The cylindrical coordinates

**Calculation:**

From the given equations, the value of *z* is obtained below.

The above equation is a quadratic equation.

Thus, solve the equation and obtain the value of

Therefore, *r* varies from 0 to 4, and
*z* varies from 2*r* to

Use the formula mentioned above to change the given problem into cylindrical coordinates. Then, by the equation (1), the volume of the given solid is computed as follows.

Integrate with respect to *z* and apply the limit of it

(b)

To determine

**To find:** The centroid of the given region *E*.

Multivariable Calculus

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Find...Ch. 15.9 - Use the given transformation to evaluate the...Ch. 15.9 - Use the given transformation to evaluate the...Ch. 15.9 - Use the given transformation to evaluate the...Ch. 15.9 - Use the given transformation to evaluate the...Ch. 15.9 - Use the given transformation to evaluate the...Ch. 15.9 - Use the given transformation to evaluate the...Ch. 15.9 - (a) Evaluate E dV, where E is the solid enclosed...Ch. 15.9 - An important problem in thermodynamics is to find...Ch. 15.9 - Evaluate the integral by making an appropriate...Ch. 15.9 - Evaluate the integral by making an appropriate...Ch. 15.9 - Evaluate the integral by making an appropriate...Ch. 15.9 - Evaluate the integral by making an appropriate...Ch. 15.9 - Evaluate the integral by making an appropriate...Ch. 15.9 - Let f be continuous oil [0, 1] and letRbe the...Ch. 15 - Suppose f is a continuous function defined on a...Ch. 15 - (a) How do you define Df(x,y)dA if D is a bounded...Ch. 15 - How do you change from rectangular coordinates to...Ch. 15 - If a lamina occupies a plane region D and has...Ch. 15 - Let f be a joint density function of a pair of...Ch. 15 - Write an expression for the area of a surface with...Ch. 15 - (a) Write the definition of the triple integral of...Ch. 15 - Suppose a solid object occupies the region E and...Ch. 15 - (a) How do you change from rectangular coordinates...Ch. 15 - (a) If a transformation T is given by x = g(u, v),...Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - Determine whether the statement is true or false....Ch. 15 - A contour map is shown for a function f on the...Ch. 15 - Use the Midpoint Rule to estimate the integral in...Ch. 15 - Calculate the iterated integral. 3....Ch. 15 - Calculate the iterated integral. 4. 0101yexydxdyCh. 15 - Calculate the iterated integral. 5....Ch. 15 - Calculate the iterated integral. 6. 01xex3xy2dydxCh. 15 - Calculate the iterated integral. 7....Ch. 15 - Calculate the iterated integral. 8....Ch. 15 - Write Rf(x,y)dA as an iterated integral, where R...Ch. 15 - Write Rf(x,y)dA as an iterated integral, where R...Ch. 15 - The cylindrical coordinates of a point are (23,3,...Ch. 15 - The rectangular coordinates of a point are (2, 2,...Ch. 15 - The spherical coordinates of a point are (8, /4,...Ch. 15 - Identify the surfaces whose equations are given....Ch. 15 - Write the equation in cylindrical coordinates and...Ch. 15 - Sketch the solid consisting of all points with...Ch. 15 - Describe the region whose area is given by the...Ch. 15 - Describe the solid whose volume is given by the...Ch. 15 - Calculate the iterated integral by first reversing...Ch. 15 - Calculate the iterated integral by first reversing...Ch. 15 - Calculate the value of the multiple integral. 21....Ch. 15 - Calculate the value of the multiple integral. 22....Ch. 15 - Calculate the value of the multiple integral. 23....Ch. 15 - Calculate the value of the multiple integral. 24....Ch. 15 - Calculate the value of the multiple integral. 25....Ch. 15 - Calculate the value of the multiple integral. 26....Ch. 15 - Calculate the value of the multiple integral. 27....Ch. 15 - Calculate the value of the multiple integral. 28....Ch. 15 - Calculate the value of the multiple integral. 29....Ch. 15 - Calculate the value of the multiple integral. 30....Ch. 15 - Calculate the value of the multiple integral. 31....Ch. 15 - Calculate the value of the multiple integral. 32....Ch. 15 - Calculate the value of the multiple integral. 33....Ch. 15 - Calculate the value of the multiple integral. 34....Ch. 15 - Find the volume of the given solid. 35. Under the...Ch. 15 - Find the volume of the given solid. 36. Under the...Ch. 15 - Find the volume of the given solid. 37. The solid...Ch. 15 - Find the volume of the given solid. 38. Bounded by...Ch. 15 - Find the volume of the given solid. 39. One of the...Ch. 15 - Find the volume of the given solid. 40. Above the...Ch. 15 - Consider a lamina that occupies the region D...Ch. 15 - A lamina occupies the part of the disk x2 + y2 a2...Ch. 15 - (a) Find the centroid of a solid right circular...Ch. 15 - Find the area of the part of the cone z2 = a2(x2 +...Ch. 15 - Find the area of the part of the surface z = x2 +...Ch. 15 - Use polar coordinates to evaluate...Ch. 15 - Use spherical coordinates to evaluate...Ch. 15 - If D is the region bounded by the curves y = 1 x2...Ch. 15 - The joint density function for random variables X...Ch. 15 - A lamp has three bulbs, each of a type with...Ch. 15 - Rewrite the integral 11x2101yf(x,y,z)dzdydxas an...Ch. 15 - Give five other iterated integrals that are equal...Ch. 15 - Use the transformation u = x y, v = x + y to...Ch. 15 - Use the transformation x = u2, y = v2 z = w2 to...Ch. 15 - Use the change of variables formula and an...Ch. 15 - The Mean Value Theorem for double integrals says...Ch. 15 - Suppose that f is continuous on a disk that...Ch. 15 - (a) Evaluate D1(x2+y2)n/2dA,where n is an integer...Ch. 15 - If [x] denotes the greatest integer in x, evaluate...Ch. 15 - Evaluate the integral 0101emaxx2,y2dydxwhere...Ch. 15 - Find the average value of the function...Ch. 15 - If a, b, and c are constant vectors, r is the...Ch. 15 - The double integral 010111xydxdyis an improper...Ch. 15 - Leonhard Euler was able to find the exact sum of...Ch. 15 - (a) Show that 01010111xyzdxdydz=n11n3 (Nobody has...Ch. 15 - Show that 0arctanxarctanxxdx=2lnby first...Ch. 15 - (a) Show that when Laplaces equation...Ch. 15 - (a) A lamina has constant density and takes the...Ch. 15 - If f is continuous, show that...Ch. 15 - Evaluate limnn2i=1nj=1n21n2+ni+j.Ch. 15 - The plane xa+yb+zc=1a0,b0,c0cuts the solid...

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