The eigenfunctions for the IBVP Ut =u x +t; 00 X, u,(0, t) = 0 u,(1, t)= 0 u(x, 0)= cos x %3D u,(x, 0)= x are a. X, = cos (n Ttx); n=0, 1, 2, .... in. O b. x, = cos (n Ttx); n= 1, 2,- ... .. c. X, = sin (n TTX); n= 1, 2, .. O d. X, = sin 2n+1 TIX); 2 n 0, 1, 2, - O e. Xn = coS 2n+1 TIX); n 0, 1, 2,- ... 2
The eigenfunctions for the IBVP Ut =u x +t; 00 X, u,(0, t) = 0 u,(1, t)= 0 u(x, 0)= cos x %3D u,(x, 0)= x are a. X, = cos (n Ttx); n=0, 1, 2, .... in. O b. x, = cos (n Ttx); n= 1, 2,- ... .. c. X, = sin (n TTX); n= 1, 2, .. O d. X, = sin 2n+1 TIX); 2 n 0, 1, 2, - O e. Xn = coS 2n+1 TIX); n 0, 1, 2,- ... 2
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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
Transcribed Image Text:The eigenfunctions for the IBVP
Utt =u xx +t;
u,(0, t)= 0
0<x<1,
t>0
XX
u,(1, t)= 0
u(x, 0)= cos x
%3D
u,(x, 0) = x
are
a. Xn
= cos (n Ttx);
n= 0, 1, 2,
....
O b. X, = cos (n Ttx);
n= 1, 2,
O c. X, = sin (n Ttx);
n= 1, 2,
O d.
2n+1
X = sin (
TX);
n=0, 1, 2,
%3D
2n+1
-TTX);
2
n=0, 1, 2, .
%3D
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