Exercise 3.  Express the following functions in the form  .  

3 (c).  .

Solution 3 (c).

See text and/or instructor's solution manual.

Here we have    and  .

We are done.   

Aside.  We can let Mathematica double check our work.

This solution is complements of the authors.

(c) 2008 John H. Mathews, Russell W. Howell