- #1
juice34
1. Homework Statement
Can someone help me take the derivative of the integral
u(1/r)((d/dr)[(r)(dV/dr)])=P
2. Homework 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
Can someone help me take the derivative of the integral
u(1/r)((d/dr)[(r)(dV/dr)])=P
2. Homework 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