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

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?

Answer 1

[James Tursa]

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?

[Feliciano Döring]

pinv() worked fine thanks! I use it afterwards to calculate a singular value decomposition

[Mohammed Altaher]

Is pinv() used here to find the inverse of non square matrix such as 6X5 Jacobian matrix?

[Nirajan Khatri]

@James Tursa sir why we use pinv(), i have 1*2000 matrix and i also want to find its inverse

Answer 2

[Sourabh Guduru]

pinv(a)