$\"\"$

The matrices are $\"\"$ , $\"\"$ , $\"\"$ and $\"\"$ .

Evalulate the expression is $\"\"$ .

Find $\"\"$ .

$\"\"$ and $\"\"$

$\"\"$

$\"\"$ .

$\"\"$

Find $\"\"$ .

$\"\"$ and $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

The solution matrix of $\"\"$ is $\"\"$ .