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.