Exercise 3.  Show that Equation (5-38)    

simplifies to Equation (5-39)  .    

Hint.  Use the facts that      and      and   

Solution 3.

See text and/or instructor's solution manual.

Solution.  

                      
                    
                      

Aside.  We can let Mathematica double check our work.

This solution is complements of the authors.

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