(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If I'm given a potential say A(x/a-m) m an integer, (this is the sawtooth wave)

What kind of trial function should I use to approximate this?

2. Relevant equations

3. The attempt at a solution

I do recall this function arising in Fourier series. Should I actually solve for the Fourier coefficients to get a trig function? Maybe I'm making this more complicated, is there a simpler way to do this?

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# Variational Principle

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