# Matrix

## Definition of matrices A, B and C.

A:matrix([2,-1,0,5],[-4,0,3,2]);

B:matrix([8,-2,-1],[0,3,4],[12,-6,10],[3,1,0]);

C:matrix([2,1,0,-5],[4,0,-3,-2]);

## Calculations with Matrices

A+2;

A+C;

A-C;

A*2;

A.B;

## Definition of a square matrix D.

D:matrix([1,2,3],[3,2,1],[4,2,8]);

## Inversion of the square matrix

E:invert(D);

## Product of a square matrix and inverse matrix
is the identity matrix

D.E;