Asked by rachel

Let P= (V^2)R / (R+r)^2
Calculate dP/dr, assuming that r is variable and R is constant.
Answered by MathMate
P= (V^2)R / (R+r)^2
Assuming V,R are constants and use chain rule
dP/dr
= dP/d(R+r) * d(R+r)/dr
= d[(V^2)R/(R+r)^2]/r
=-2V^2R/(R+r)3
=-2V^2R/(R+r)3
Answered by Che
-2V^2R/(R+r)3
Answered by name
(-2V^2R)/(R+r)^3
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