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Differentiation help

I am trying to find dh/dt
So why can’t I use the chain rule of dh/dt instead I have to use it on dv/dt how do you figure out on which change of rate you use the chain rule on?


Also what property is it talking about below?


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Original post by IShouldBeRevising_
I am trying to find dh/dt
So why can’t I use the chain rule of dh/dt instead I have to use it on dv/dt how do you figure out on which change of rate you use the chain rule on?


Also what property is it talking about below?




dVdt=dVdhdhdt\frac{dV}{dt} = \frac{dV}{dh} \frac{dh}{dt}

You are given dVdt\frac{dV}{dt} numerically in the question. You can find dVdh\frac{dV}{dh} from the functional relationship given.

The log relationship is:

log(ab)=log(a)log(b)\log(\frac{a}{b}) = \log(a) - \log(b)

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