In RPN mode, you can try a few more exercises:

A

`

`+ A

`

`-

A

`

`+ A

`

`-

A

`

`+ A

`

`-

A` `+ A ` `-Multiplication

There are different multiplication operations that involve matrices. These are described next. The examples are shown in algebraic mode.

Multiplication by a scalar

Some examples of multiplication of a matrix by a scalar are shown below.

Matrix-vector multiplication

Matrix-vector multiplication is possible only if the number of columns of the matrix is equal to the length of the vector. A couple of examples of matrix- vector multiplication follow:

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