Show that f'(z) DNE
f(z) = e^x * e^-iy
so I have to show that u_x =/= v_y or v_x =/= -u_y
The Attempt at a Solution
my question is this: what is u(x,y) and v(x,y)? is it e^x and e^-iy respectively? Thank you for your help!