(PDE)(Fourier Series) - I'm trying to find the Fourier Series for f(x)=|sin(x)|. I'm used to being given (or finding) an orthonormal basis to express the fourier expansion of a given function in-what do I do if I don't have that given orthonormal basis? How do I treat it differently?

Question

mendicant_bias · Answer

@UnkleRhaukus YEAHHHH that profile picture

mendicant_bias · Answer

@dan815

unklerhaukus · Answer

is $f(x)=|\sin(x)|$ an even or odd function?

mendicant_bias · Answer

Sorry, was dealing with some stuff. It's an odd function, IIRC.

unklerhaukus · Answer

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mendicant_bias · Answer

Alright, I'm not entirely sure what this has to do with my question, but okay.

unklerhaukus · Answer

it's an even function

dan815 · Answer

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