au ca, t) - azu (nt) = 0 at an² ocael ost uncoot)= ullit)=0 linio): Sincan)...

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au ca, t) - azu (nt) = 0 at an² ocael ost uncoot)= ullit)=0 linio): Sincan) 418,0:5)=? lei hao.2, k= 0.25

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Answer 1

Answer #1

W -1.j -2011 +1 -1.j. h +1+1.j +1.25u: +1.j ou a²u at ox² Wij - 4;,;=1 k k = 0.25 h=0.2 Uj-U11-1 U-1,1 – 2uj 0.25 0.2 Wij – 4

clc;clear all;close all;
A=diag(-3.5*ones(1,4))+diag(1.25*ones(1,3),-1)+diag(1.25*ones(1,3),1);
B=-[sin(0.2*pi);sin(0.4*pi);sin(0.6*pi);sin(0.8*pi)];
X1=inv(A)*B
X2=inv(A)*(-1*X1)

-3.5 1.25 0 0 فيرا U1.j-1 1.25 -3.5 1.25 0 112.j U2.j-1 U3.j-1 0 1.25 -3.5 1.25 13.j 0 0 1.25 -3.5 ||44, 44.j-1) j=1(t = 0.25

Matlab result
X1 =

0.3978
0.6437
0.6437
0.3978

X2 =

0.2693
0.4357
0.4357
0.2693

>>

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Answer 2

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au ca, t) - azu (nt) = 0 at an² ocael ost uncoot)= ullit)=0 linio): Sincan)...