Exercise 11.  Let   .  

If    is a complex constant, show that   .  

Solution 11.

See text and/or instructor's solution manual.

Solution.   By Theorem 4.4,   ,   and   ,   and   .  

Another application of  Theorem 4.4 can be used to obtain:  

                      

This solution is complements of the authors.

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