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

Can someone help me take the derivative of the integral

u(1/r)((d/dr)[(r)(dV/dr)])=P

2. Relevant equations

3. The attempt at a solution

my attempt yields V=(Pr^2)/(2u)+C(1), which is not right. The actual answer is V=(Pr^2)/4u+C(1)ln(r)+C(2). I am having trouble finding out where the 4 and everything else comes from could someone please explain to me what is going on. Thank YOU

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# Derivative of an integral?

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