Re: Rates of change question

Have you tried implicitly differentiating with respect to time $\displaystyle t$?

Re: Rates of change question

How should I go about doing that with three variables - R, R1 and R2 ?

Re: Rates of change question

All three variables for functions of time, so use implicit differentiation...i.e., the chain rule.

Re: Rates of change question

I'm not sure whether I've done this correctly, but heres my attempt at that:

Differentiating with respect to t -

(-R^{-2})dR/dt = (-R1)^{-2}dR1/dt - (R2)^{-2}dR2/dt

and then solving for dR/dt i got 0.483.

Re: Rates of change question

Yes, I get the same result (5261/10890) Ω/s...good work! :D

Re: Rates of change question

Yay! Thanks heaps mate :)