Exercise 7 (a).  Find   .  

Solution 7 (a).

Answer.   .  

Solution.  Recall that      so that

                    .

Then

                      

We are done.   

Aside.  We can look at a graph.

                    The curve      is asymptotic to the line   .  

                    Hence,   .

We are really 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