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Invert Matrix Command

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andy ganteng
andy ganteng 2011-11-15
A and B are matrices, which A is invers from B. Is there any differences between A=B^-1; A=B.\1; A=inv(B);
coz i have different result from 3 command above
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Grzegorz Knor
Grzegorz Knor 2011-11-16
Each row in a matrix w is linearly dependent, so rank(w) = 1.
hold all
for k=2:72
plot(w(1,:)./w(k,:))
end
There is no an inverse matrix in this case.

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Grzegorz Knor
Grzegorz Knor 2011-11-15
Statement A=B.\1 doesn't calculate an inverse matrix. You probably mean:
A2=B\eye(size(B))
B^-1 and inv(B) give the same result. B\eye(size(B)) is a little different, because it uses different algorithm.

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