ди 18. dx2 + xe-3t *, 0 < x< n, t>0 %D ди du = 0, d = 0, t> 0 dx lx=0 ди u(x, 0) = 0, 0 < x< n.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Why is u(x,t)=X(x) and not X(x)T(t). Can you please explain it to me? Thank you 

dx Ix=0
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Math / Bundle: Differential Equations with Boundary-Value ... / In Problems 17-20 proceed as in Example 3 to solve the give...
: In Problems 17-20 proceed as in Example 3 to solve the given boundary-value proble...
DIFFERENTIAL
EQUATIONS with
ndary Value Proo
Bundle: Differential Equations wit...
9th Edition
Dennis G. Zill
Publisher: Cengage Learning
DENNIS G ZILL
Find 2
ISBN: 9781337604901
Chapter 12.6, Problem 18E
Textbook Problem
In Problems 17-20 proceed as in Example 3 to solve the given boundary-value problem.
Pu
ди
18.
+ xe-31
0 < x< n, t > 0
dx2
dt >
ди
ди
= 0,
= 0, t> 0
dx \x=n
u(x, 0) = 0, 0 < x< n.
Expert Solution
To determine
The solution of the boundary value problem under given boundary conditions.
Answer to Problem 18E
X GET 10 FREE QUESTIONS
de problem under given boundary conditions is
1- (-1)"
00
n (1
-n²t
–3t
Transcribed Image Text:dx Ix=0 9:06 РM Мon May 3 * 31% AA bartleby.com + Derek C G Google G Google G diy projects... y! Samsung S2... In Problems... = bartleby Q Search for textbooks, step-by-step explanatio... Ask an Expert Math / Bundle: Differential Equations with Boundary-Value ... / In Problems 17-20 proceed as in Example 3 to solve the give... : In Problems 17-20 proceed as in Example 3 to solve the given boundary-value proble... DIFFERENTIAL EQUATIONS with ndary Value Proo Bundle: Differential Equations wit... 9th Edition Dennis G. Zill Publisher: Cengage Learning DENNIS G ZILL Find 2 ISBN: 9781337604901 Chapter 12.6, Problem 18E Textbook Problem In Problems 17-20 proceed as in Example 3 to solve the given boundary-value problem. Pu ди 18. + xe-31 0 < x< n, t > 0 dx2 dt > ди ди = 0, = 0, t> 0 dx \x=n u(x, 0) = 0, 0 < x< n. Expert Solution To determine The solution of the boundary value problem under given boundary conditions. Answer to Problem 18E X GET 10 FREE QUESTIONS de problem under given boundary conditions is 1- (-1)" 00 n (1 -n²t –3t
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In Problems...
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Math / Bundle: Differential Equations with Boundary-Value ... / In Problems 17-20 proceed as in Example 3 to solve the give...
: In Problems 17-20 proceed as in Example 3 to solve the given boundary-value proble...
Explanation of Solution
Given:
The given boundary value problem is
dx2
Pu
-3t
+ xe
ди
0 < x < a, t > 0 and the given boundary
dt
o = 0, = 0 and u (x, 0) = 0.
ди
conditions are
dx Ix=0
dx Ix=n
Calculation:
The given boundary value problem is,
ди
–3t
+ xе
(1)
dx2
dt
When λ α, α >0
Consider the equation,
и (х, t) — X (х).
(2)
Separate the variable of equation (2),
* = -à
X"
X
The equation of the variable X is,
X" + AX = 0
Substitute 2 = a² in the above equation,
X" + a²X = 0
The general solution of the above equation is,
X (х)
= c¡ cos ɑx + c2 sin x .
(3)
ди
X GET 10 FREE QUESTIONS
du = 0 and u (x, 0) = 0, c2 = 0
For non-trivial solution c1 # 0, a = n
Transcribed Image Text:9:06 РM Мon May 3 * 31% AA bartleby.com + Derek C G Google G Google G diy projects... y! Samsung S2... In Problems... = bartleby Q Search for textbooks, step-by-step explanatio... Ask an Expert Math / Bundle: Differential Equations with Boundary-Value ... / In Problems 17-20 proceed as in Example 3 to solve the give... : In Problems 17-20 proceed as in Example 3 to solve the given boundary-value proble... Explanation of Solution Given: The given boundary value problem is dx2 Pu -3t + xe ди 0 < x < a, t > 0 and the given boundary dt o = 0, = 0 and u (x, 0) = 0. ди conditions are dx Ix=0 dx Ix=n Calculation: The given boundary value problem is, ди –3t + xе (1) dx2 dt When λ α, α >0 Consider the equation, и (х, t) — X (х). (2) Separate the variable of equation (2), * = -à X" X The equation of the variable X is, X" + AX = 0 Substitute 2 = a² in the above equation, X" + a²X = 0 The general solution of the above equation is, X (х) = c¡ cos ɑx + c2 sin x . (3) ди X GET 10 FREE QUESTIONS du = 0 and u (x, 0) = 0, c2 = 0 For non-trivial solution c1 # 0, a = n
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