Adding and Multiplying 2x2 Matrices

Open a new calculator window.

And create a shell for a 2 by 2 matrix, as shown.

Copy this matrix shell and paste it into a new line.

Insert the data into the matrix and assign the matrix to variable a.

Repeat with a new matrix.

Input the data into the matrix shell.

Assign this matrix to variable b.

Now you can combine the matrices by combining the variables.

This is an example of adding the two matrices.

This is an example of multiplying two matrices.