MATLAB: Solving an equation through optimization……….

Question

Y=Ax
 y is a mX1 matrix
 A is a mXn matrix
 x is a nX1 matrix
AA'=I

Here we apply optimization technique to solve x instead of taking inverse of A. Will you explain me why……………Please help me……..

Answer 1

inverse is only strictly defined for square matrices.

You could use pinv() or the backslash operator ('\')