" ")10 all the (1) (20 pts) Let f(z) be the principal branch of z- Re( z ) = + ( B+2Pin )a) (10 pts) Find f(i). 2" = Re(z) + Im/z) Z in- costtisho bewalls sis and Re(z) 10 ) = ( Costtisho) 2 "Isint ) 2 how that ( 21) f ( 2 2) = Af (2122) where 1 = 1, e2" or e-2x