EBK NUMERICAL METHODS FOR ENGINEERS
7th Edition
ISBN: 9780100254145
Author: Chapra
Publisher: YUZU
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Textbook Question
Chapter 25, Problem 10P
Use the RK-Fehlberg approach to perform the same calculation as in Example 25.12 from
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3. Using the trial function uh(x) = a sin(x) and weighting function wh(x) = b sin(x) find
an approximate solution to the following boundary value problems by determining the value
of coefficient a. For each one, also find the exact solution using Matlab and plot the exact
and approximate solutions. (One point each for: (i) finding a, (ii) finding the exact solution,
and (iii) plotting the solution)
a.
(U₁xx - 2 = 0
u(0) = 0
u(1) = 0
b. Modify the trial function and find an approximation for the following boundary value
problem. (Hint: you will need to add an extra term to the function to make it satisfy
the boundary conditions.)
(U₁xx - 2 = 0
u(0) = 1
u(1) = 0
3. Using the trial function u¹(x) = a sin(x) and weighting function w¹(x) = b sin(x) find
an approximate solution to the following boundary value problems by determining the value
of coefficient a. For each one, also find the exact solution using Matlab and plot the exact
and approximate solutions. (One point each for: (i) finding a, (ii) finding the exact solution,
and (iii) plotting the solution)
a.
(U₁xx -2 = 0
u(0) = 0
u(1) = 0
b. Modify the trial function and find an approximation for the following boundary value
problem. (Hint: you will need to add an extra term to the function to make it satisfy
the boundary conditions.)
(U₁xx-2 = 0
u(0) = 1
u(1) = 0
need using finite elemental method only
Chapter 25 Solutions
EBK NUMERICAL METHODS FOR ENGINEERS
Ch. 25 - Solve the following initial value problem over the...Ch. 25 - Solve the following problem over the interval from...Ch. 25 - Use the (a) Euler and (b) Heun (without iteration)...Ch. 25 - Solve the following problem with the fourth-order...Ch. 25 - Solve from t=0to3withh=0.1 using (a) Heun (without...Ch. 25 - 25.6 Solve the following problem numerically from...Ch. 25 - Use (a) Eulers and (b) the fourth-order RK method...Ch. 25 - 25.8 Compute the first step of Example 25.14...Ch. 25 -
25.9 If, determine whether step size adjustment...Ch. 25 - Use the RK-Fehlberg approach to perform the same...
Ch. 25 -
25.11 Write a computer program based on Fig....Ch. 25 - Test the program you developed in Prob. 25.11 by...Ch. 25 -
25.13 Develop a user-friendly program for the...Ch. 25 - Develop a user-friendly computer program for the...Ch. 25 - Develop a user-friendly computer program for...Ch. 25 - 25.16 The motion of a damped spring-mass system...Ch. 25 - If water is drained from a vertical cylindrical...Ch. 25 - The following is an initial value, second-order...Ch. 25 - Assuming that drag is proportional to the square...Ch. 25 - A spherical tank has a circular orifice in its...Ch. 25 - The logistic model is used to simulate population...Ch. 25 - 25.22 Suppose that a projectile is launched...Ch. 25 - The following function exhibits both flat and...Ch. 25 - 25.24 Given the initial conditions,, solve the...Ch. 25 - Use the following differential equations to...Ch. 25 - 25.26 Three linked bungee jumpers are depicted in...
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