How do i calculate the inverse of a non-square matrix?

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Feliciano Döring 2018-4-24

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评论： Nirajan Khatri 2020-11-24

I have a 4x3 matrix(S) and i want to calculate the inverse of it, the matrix is:

S=
    1.7530         0         0         0
         0    0.1009         0         0
         0         0    0.0149         0

but since it is not a square matrix when i use S^-1 it says i have to use elemental wise power. The problem is when i use elemental-wise power the zeros go to 'Inf' so what do i do?

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Answer 1

James Tursa 2018-4-24

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Typically one would use backslash \ or perhaps pinv( ) for this. What are you using this for? I.e., what is the problem you are solving and what are you doing with the result downstream in your code?