We are given the following functions:

We are asked to determine:

This is equivalent to:

Substituting the functions:

Now, we use the following property:

Applying the property we get:

Solving the products:

Simplifying we get:

And thus we get the desired expression.
Now, we are asked to determine:

This is the product of the functions. Substituting we get:

Solving the products:

Since we can't simplify any further this is the final answer.