- Thread starter
- Moderator
- #1

- Jun 20, 2014

- 1,896

-----

Suppose $f$ is analytic on a simple closed contour $c$ in the complex plane. Prove $\displaystyle\int_c \overline{f(z)}f’(z)\, dz$ is purely imaginary.

-----

Remember to read the POTW submission guidelines to find out how to submit your answers!