推 thegod13:matlab不過是計算機強化版 05/26 19:03
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>> A=[3,-1,0,0,0,0,0,0,0;-1,3,-1,0,0,0,0,0,0;0,-1,3,-1,0,0,0,0,0;0,0,-1,3,-1,0,0,0,0;0,0,0,-1,3,-1,0,0,0;0,0,0,0,-1,3,-1,0,0;0,0,0,0,0,-1,3,-1,0;0,0,0,0,0,0,-1,3,-1;0,0,0,0,0,0,0,-1,3];
pi=3.1415926;
B=[cos(-0.4*pi);cos(-0.3*pi);cos(-0.2*pi);cos(-0.1*pi);cos(0*pi);cos(0.1*pi);cos(0.2*pi);cos(0.3*pi);cos(0.4*pi)];
for i=1:9
C=inv(A)*B
B=C;
end
C =
0.2815
0.5354
0.7369
0.8663
0.9108
0.8663
0.7369
0.5354
0.2815
C =
0.2564
0.4876
0.6712
0.7890
0.8296
0.7890
0.6712
0.4876
0.2564
C =
0.2335
0.4442
0.6113
0.7187
0.7557
0.7187
0.6113
0.4442
0.2335
C =
0.2127
0.4046
0.5568
0.6546
0.6883
0.6546
0.5568
0.4046
0.2127
C =
0.1937
0.3685
0.5072
0.5962
0.6269
0.5962
0.5072
0.3685
0.1937
C =
0.1765
0.3356
0.4620
0.5431
0.5710
0.5431
0.4620
0.3356
0.1765
C =
0.1607
0.3057
0.4208
0.4947
0.5201
0.4947
0.4208
0.3057
0.1607
C =
0.1464
0.2785
0.3833
0.4506
0.4737
0.4506
0.3833
0.2785
0.1464
C =
0.1333
0.2536
0.3491
0.4104
0.4315
0.4104
0.3491
0.2536
0.1333
>>
話說5小時前我對Matlab一竅不通 (菸)
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