On this physics problem i need to do a double integral (dx,dy) of 1/sqrt(x^2 + y^2 +z^2). Which looks easy enough at first, until I reallized (after many hours) I cannot figure out how to integrate it. I am sure at this point there is some trig substitution (learned too long ago...), but Im basically lost.(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: Trig Substitution easy right?

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