Questionof the night q12) let z =x+ iy, then which of the following function is analytic a) fz) = x - iy. b) flz)= e*(cosy isiny). c) f{z) = e(cosy - isiny). d)

option C is correct see the attachment

see attachments.....in 3rd option, since the four partial derivatives Us,Uy, Vx, Vy exists & are continuous everywhere and they satisfy CR equations, so the third function is analy...

option c is correct

thanks