### Home > CCA2 > Chapter 5 > Lesson 5.2.1 > Problem 5-61

5-61.

Consider the function of

What is

?Substitute

. What is the domain of

?Division by

is undefined. What *x*-value causes division byfor this function? cannot have that value.If

, what is?Substitute

. Now use the output of

as the input forto calculate., therefore calculate.