can i do inverse for array in matlab using for ? how ?
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x=[1 2 3; 4 5 6; 7 8 9]
Answers (1)
David Hill
on 18 Oct 2022
If det(x) ~=0, then matrix is invertable.Your matrix above is not.
x=[1 2 3; 4 5 6; 7 8 -1];
det(x)
r=rref([x,eye(size(x))]);
Xinv=r(1:3,4:6)
x*Xinv
Xinv*x
2 Comments
John D'Errico
on 18 Oct 2022
Note that using det to detemine if a matrix singular is just a bad idea. Use tools like rank, or cond instead.
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