Differential Equations with Boundary-Value Problems
9th Edition
ISBN: 9781337632515
Author: Dennis G. Zill
Publisher: Cengage Learning US
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Chapter 12, Problem 10RE
Find the temperature u(x, t) in the infinite plate of width 2L shown in Figure 12.R.4 if the initial temperature is u0 throughout. [Hint: u(x, 0) = u0 −L < x < L is an even function of x.]
FIGURE 12.R.4 Infinite plate in Problem 10
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Chapter 12 Solutions
Differential Equations with Boundary-Value Problems
Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...
Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 116 use separation of variables to...Ch. 12.1 - In Problems 1726 classify the given partial...Ch. 12.1 - Prob. 18ECh. 12.1 - In Problems 1726 classify the given partial...Ch. 12.1 - Prob. 20ECh. 12.1 - In Problems 1726 classify the given partial...Ch. 12.1 - Prob. 22ECh. 12.1 - Prob. 23ECh. 12.1 - Prob. 24ECh. 12.1 - Prob. 25ECh. 12.1 - Prob. 26ECh. 12.1 - In Problems 27 and 28 show that the given partial...Ch. 12.1 - In Problems 27 and 28 show that the given partial...Ch. 12.1 - Verify that each of the products u = XY in (3),...Ch. 12.1 - Prob. 30ECh. 12.1 - Prob. 31ECh. 12.1 - Prob. 32ECh. 12.2 - In Problems 16 a rod of length L coincides with...Ch. 12.2 - In Problems 16 a rod of length L coincides with...Ch. 12.2 - In Problems 16 a rod of length L coincides with...Ch. 12.2 - In Problems 16 a rod of length L coincides with...Ch. 12.2 - In Problems 16 a rod of length L coincides with...Ch. 12.2 - In Problems 16 a rod of length L coincides with...Ch. 12.2 - In Problems 710 a string of length L coincides...Ch. 12.2 - In Problems 710 a string of length L coincides...Ch. 12.2 - In Problems 710 a string of length L coincides...Ch. 12.2 - Prob. 10ECh. 12.2 - In Problems 11 and 12 set up the boundary-value...Ch. 12.2 - In Problems 11 and 12 set up the boundary-value...Ch. 12.3 - In Problems 1 and 2 solve the heat equation (1)...Ch. 12.3 - In Problems 1 and 2 solve the heat equation (1)...Ch. 12.3 - Find the temperature u(x, t) in a rod of length L...Ch. 12.3 - Solve Problem 3 if L = 2 and f(x)={x,0x10,1x2.Ch. 12.3 - Suppose heat is lost from the lateral surface of a...Ch. 12.3 - Solve Problem 5 if the ends x = 0 and x = L are...Ch. 12.3 - A thin wire coinciding with the x-axis on the...Ch. 12.3 - Find the temperature u(x, t) for the...Ch. 12.4 - In Problems 16 solve the wave equation (1) subject...Ch. 12.4 - In Problems 16 solve the wave equation (1) subject...Ch. 12.4 - In Problems 16 solve the wave equation (1) subject...Ch. 12.4 - In Problems 16 solve the wave equation (1) subject...Ch. 12.4 - In Problems 16 solve the wave equation (1) subject...Ch. 12.4 - In Problems 16 solve the wave equation (1) subject...Ch. 12.4 - In Problems 710 a string is tied to the x-axis at...Ch. 12.4 - In Problems 710 a string is tied to the x-axis at...Ch. 12.4 - In Problems 710 a string is tied to the x-axis at...Ch. 12.4 - In Problems 710 a string is tied to the x-axis at...Ch. 12.4 - Prob. 11ECh. 12.4 - A model for the motion of a vibrating string whose...Ch. 12.4 - Prob. 13ECh. 12.4 - Prob. 14ECh. 12.4 - Prob. 15ECh. 12.4 - Prob. 16ECh. 12.4 - The transverse displacement u(x, t) of a vibrating...Ch. 12.4 - Prob. 19ECh. 12.4 - The vertical displacement u(x, t) of an infinitely...Ch. 12.4 - Prob. 21ECh. 12.4 - Prob. 22ECh. 12.4 - Prob. 23ECh. 12.4 - Prob. 24ECh. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - In Problems 1–10 solve Laplace’s equation (1) for...Ch. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - In Problems 1–10 solve Laplace’s equation (1) for...Ch. 12.5 - In Problems 110 solve Laplaces equation (1) for a...Ch. 12.5 - Prob. 10ECh. 12.5 - In Problems 11 and 12 solve Laplaces equation (1)...Ch. 12.5 - In Problems 11 and 12 solve Laplaces equation (1)...Ch. 12.5 - Prob. 13ECh. 12.5 - Prob. 14ECh. 12.5 - In Problems 15 and 16 use the superposition...Ch. 12.5 - In Problems 15 and 16 use the superposition...Ch. 12.5 - Prob. 18ECh. 12.5 - Solve the Neumann problem for a rectangle:...Ch. 12.5 - Prob. 20ECh. 12.6 - In Problems 1-12 proceed as in Example 1 to solve...Ch. 12.6 - In Problems 1-12 proceed as in Example 1 to solve...Ch. 12.6 - Prob. 3ECh. 12.6 - In Problems 1-12 proceed as in Example 1 to solve...Ch. 12.6 - In Problems 1-12 proceed as in Example 1 to solve...Ch. 12.6 - Prob. 6ECh. 12.6 - Prob. 7ECh. 12.6 - Prob. 8ECh. 12.6 - In Problems 1-12 proceed as in Example 1 to solve...Ch. 12.6 - In Problems 1-12 proceed as in Example 1 to solve...Ch. 12.6 - Prob. 11ECh. 12.6 - Prob. 12ECh. 12.6 - Prob. 13ECh. 12.6 - In Problems 13-16 proceed as in Example 2 to solve...Ch. 12.6 - Prob. 15ECh. 12.6 - In Problems 13-16 proceed as in Example 2 to solve...Ch. 12.6 - Prob. 17ECh. 12.6 - Prob. 18ECh. 12.6 - Prob. 19ECh. 12.6 - Prob. 20ECh. 12.7 - In Example 1 find the temperature u(x, t) when the...Ch. 12.7 - Prob. 2ECh. 12.7 - Find the steady-state temperature for a...Ch. 12.7 - Prob. 4ECh. 12.7 - Prob. 5ECh. 12.7 - Prob. 6ECh. 12.7 - Prob. 7ECh. 12.7 - Prob. 8ECh. 12.7 - Prob. 9ECh. 12.7 - Prob. 10ECh. 12.8 - In Problems 1 and 2 solve the heat equation (1)...Ch. 12.8 - Prob. 2ECh. 12.8 - Prob. 3ECh. 12.8 - In Problems 3 and 4 solve the wave equation (2)...Ch. 12.8 - Prob. 5ECh. 12.8 - Prob. 6ECh. 12 - Use separation of variables to find product...Ch. 12 - Use separation of variables to find product...Ch. 12 - Find a steady-state solution (x) of the...Ch. 12 - Give a physical interpretation for the boundary...Ch. 12 - At t = 0 a string of unit length is stretched on...Ch. 12 - Prob. 6RECh. 12 - Find the steady-state temperature u(x, y) in the...Ch. 12 - Find the steady-state temperature u(x, y) in the...Ch. 12 - Prob. 9RECh. 12 - Find the temperature u(x, t) in the infinite plate...Ch. 12 - Prob. 11RECh. 12 - Solve the boundary-value problem 2ux2+sinx=ut, 0 ...Ch. 12 - Prob. 13RECh. 12 - The concentration c(x, t) of a substance that both...Ch. 12 - Prob. 15RECh. 12 - Solve Laplaces equation for a rectangular plate...Ch. 12 - Prob. 17RECh. 12 - Prob. 18RECh. 12 - Prob. 19RECh. 12 - If the four edges of the rectangular plate in...
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