let A = [a] be n square matrix, if a = 0 for all j = 1, 2, 3, n. then the matrix A is:
let A = [a] be n square matrix, if a = 0 for all j = 1, 2, 3, n. then the matrix A is:
Explanation
A non-reversible square matrix (m = n) is called singular or degenerate.
A square matrix is singular only if the determinant is 0.