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

Evaluate

[tex]\int^{2\pi}_{0}\frac{1}{r}\frac{d^{2}f}{d\varphi^{2}}d\varphi[/tex]

2. Relevant equations

n/a

3. The attempt at a solution

I get the integral as

[tex]\frac{1}{r}\frac{df}{d\varphi}[/tex]

Not sure how to evaluate this.

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# Homework Help: Evaluate integral of second order differential

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