Fourier Transform 11 | Sum Formulas for Sine and Cosine [dark version]

[@Hold_it]

Thank you!

[@brightsideofmaths]

You're welcome!

[@aryaapple1925]

Excellent stuff

[@brightsideofmaths]

Thank you very much :)

[@aryaapple1925]

​@brightsideofmaths do you have anything on the study of harmonic functions? That will be wonderful

[@Rafau85]

Hello, in the proof of the theorem you don't even need the uniform convergence because the functions sin(x), sin(2x), ..., 1, cos(x), cos(2x),... form a complete orthonormal system.

[@brightsideofmaths]

And exactly this last statement (about completeness) we don't know yet. In fact, we want to prove this by using this formula here :)

[@Ravi-ng3ee]

What sort of problems will I find if I take the membership?

[@brightsideofmaths]

For this series, you will find quizzes that check what you learnt from the videos.