pinv

Moore–Penrose inverse (pseudo-inverse)

Usage

pinv(A)

• A is a real or complex numerical (non-character) matrix not containing Inf nor NaN.
• It returns the pseudo-inverse of A.
• It uses the default tolerance to determine if a singular value of A is negligibly small. A singular value of A is considered zero if its absolute value is not greater than this tolerance:

tol = max(size(A)) * eps(norm(A))

pinv(A, tol)

• A is as specified in the description of pinv(A) above.
• It returns the pseudo-inverse A using a user-specified tolerance tol.
• tol should be a real non-negative scalar, not equal to Inf nor NaN.