Hi There,

Wondering if anyone was able to assist...

I'm trying to differentiate the following equation with respect to Qin:

f(T,Qin,Qp1,Qp2)=T(Qin-Qp1)*(Qp2-Qin)/(Qp2-Qp1)

I have tried using the diff command but with no luck, Maple is returning D(T)(Qin-Qp1)*(Qp2-Qin)/(Qp2-Qp1)-T(Qin-Qp1)/(Qp2-Qp1) which is not complete. 

Any assistance would be much appreciated.