$A=\left(\begin{array}{cccc}{a}_{11}& {a}_{12}& \dots & {a}_{1N}\\ {a}_{21}& {a}_{22}& \dots & {a}_{2N}\\ & \vdots \\ {a}_{N1}& {a}_{N2}& \dots & {a}_{NN}\end{array}\right)$

The computer does not verify the invertibility or the conditioning of the matrix. A valid result is when the last computation step is the identity matrix is on the left. Otherwise, can possibly be produced by interchanging rows or columns solvability.

Entering the matrix elements: a_{11}, a_{12}, ...

The entered matrix is: