[tex]\iiint {\sqrt(R^2 - 2aR\cos\theta + a^2)} R^2 \sin\theta\,dR\,d\theta\,d\phi[/tex](adsbygoogle = window.adsbygoogle || []).push({});

with the integration over R between 0 and a

the integration over between 0 and pi

the integration over between 0 and 2pi

Should I use integration by parts or should I take the R^2 sin(theta) under the square root?

Any hints and tips are much appreciated!

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# Triple integral trouble

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