Derivative stuff

rafeeki92

New member
Joined
Nov 3, 2009
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14
I have a thoughtful question...
The volume of a sphere is V = (4/3)pi(r^3), right?

So for a given dr/dt, where r = radius, Why is the rate of change of the volume of the sphere not constant even though dr/dt is constant?


i derived that

dV/dt = (4pi/3)(3r^2)(dr/dt)

not sure how to explain why dV/dt isn't constant
 
rafeeki92 said:
I have a thoughtful question...
The volume of a sphere is V = (4/3)pi(r^3), right?

So for a given dr/dt, where r = radius, Why is the rate of change of the volume of the sphere not constant even though dr/dt is constant?


i derived that

dV/dt = (4pi/3)(3r^2)(dr/dt)

not sure how to explain why dV/dt isn't constant

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