a nice integral equation

Can you solve this integral equation?

[Juan_Carls]

That's if you only consider real functions. Take f(x) = e^{ix} or e^{-ix}

[Happy_Abe]

Wonder what complex functions would satisfy this

[suffkov]

What about a f which is element of the complex numbers

[joseluisvazquez]

I was expecting to use complex functions. Unless you specify that f is real...

[hectordomingotroncoso]

Hello!, dear doctor! My dream is just You and docto Javier García, talking about the things around the universo, You under your point of view, on maths, and doctor García, un FISICA, obviously i wouldnt loose this tutorial here un You tube!!!! REGARDS, DOCTOR PEYAM, FROM MY COUNTRY, ARGENTINA, sorry My poor English.

[Blaqjaqshellaq]

Well, if f=0 we can't say that the one term is UNEQUAL to the other...