I am supposed to prove that f(z) = e^(-x)e^(-iy) is analytic everywhere. I will be able to do it, I think, but I do not know how to break f(z) into the real and imaginary parts (u(x.y) + iv(x,y)). Can someone please help???

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- May 15th 2007, 02:31 PMHollystianalytic complex functions
I am supposed to prove that f(z) = e^(-x)e^(-iy) is analytic everywhere. I will be able to do it, I think, but I do not know how to break f(z) into the real and imaginary parts (u(x.y) + iv(x,y)). Can someone please help???

- May 15th 2007, 02:41 PMThePerfectHacker
Hier.

- May 15th 2007, 04:43 PMHollysti
ok, now I am supposed to find the derivative of the function. Do I just add the two partial derivatives?

- May 15th 2007, 06:42 PMThePerfectHacker
It is equal to: u_x + i*v_x

- May 15th 2007, 06:47 PMHollysti
The derivative of e^(-x)e^(-iy) equals u_x + i*v_x? Ok, I hadn't realized that.

- May 15th 2007, 07:15 PMThePerfectHacker
- May 15th 2007, 07:45 PMHollysti
Eulers formula?

- May 15th 2007, 07:52 PMThePerfectHacker
- May 15th 2007, 07:55 PMHollysti
Oh, right. That makes sense. Thank you for taking time to explain that to me!