# Math Help - complex function derivation

1. ## complex function derivation

z=x+iy is a complex number.
If i have f(z)=u(x,y)+iv(x,y), which is the derivation rule to get
$\frac{df(z)}{dz}$ ?
Thanks.

2. See...

http://www.mathhelpforum.com/math-he...on-157559.html

Kind regards

$\chi$ $\sigma$