|November 10th, 2016, 07:32 AM||#1|
Joined: Dec 2015
I have spent the last few days try to work out how to do this question and I am not getting anywhere.
|November 10th, 2016, 08:01 AM||#2|
Joined: Sep 2015
differentiate $I(v,T)$ with respect to v
set the derivative equal to 0 and solve for v treating T as a constant
you should end up with the equation they ask for
the problem states you don't have to bother with the second derivative check to ensure the critical point found above is in fact a maxima so you don't need to do that.