$\"\"$

\

The functions are $\"\"$ and $\"\"$ .

\

Find $\"\"$ .

\

$\"\"$ (Original function)

\

$\"\"$ (Substitute $\"\"$ )

\

$\"\"$ (Substitute $\"\"$ )

\

$\"\"$ (Simplify)

\

$\"\"$ (Substitute $\"\"$ )

\

$\"\"$ (Sum of squares: $\"\"$ )

\

$\"\"$ (Simplify)

\

$\"\"$ (Substitute $\"\"$ )

\

$\"\"$ (Evaluate powers and multiply)

\

$\"\"$ (Simplify)

\

Therefore the value of $\"\"$ is $\"\"$ .

\

$\"\"$

\

$\"\"$ .