How do i calculate the inverse of a non-square matrix?
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Feliciano Döring
on 24 Apr 2018
Commented: Nirajan Khatri
on 24 Nov 2020
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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Accepted Answer
James Tursa
on 24 Apr 2018
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?
3 Comments
Mohammed Altaher
on 19 Feb 2019
Is pinv() used here to find the inverse of non square matrix such as 6X5 Jacobian matrix?
Nirajan Khatri
on 24 Nov 2020
@James Tursa sir why we use pinv(), i have 1*2000 matrix and i also want to find its inverse
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