Consider ∫sin^m xcos^n xdx.
 (a) How do you evaluate ∫sin^m xcos^n xdx if m is odd? Share an example including the step by step solution. 
 (b) What if n is odd? Share an example including the step by step solution. 
 (c) What if m and n are both even? Share an example including the step by step solution.