Prove the following by means of Cauchy-Goursat theorem. Begin with http://answerboard.cramster.com/Answ...1657843372.gif performed around |z|=1. Use the parametric representation http://answerboard.cramster.com/Answ...1032846094.gif Separate your equation into real and imaginary parts.

12. http://answerboard.cramster.com/Answ...0095346941.gif