What is the value of this triple integral $$\int_0^{2\pi}\int_0^{2\pi}\int_0^{2\pi}|\cos x+\cos y+\cos z|dxdydz?$$$$\int\limits_0^{2\pi}\int\limits_0^{2\pi}\int\limits_0^{2\pi}|\cos x+\cos y+\cos z|\ dx\ dy\ dz?$$ It has to do with some Schwarz lemma.
David G. Stork
- 2.6k
- 1
- 21
- 37
Post Closed as "Not suitable for this site" by Piotr Hajlasz, Stefan Kohl♦, user6976, David Handelman, Max Alekseyev
