Finding the derivative

1. Sep 18, 2008

s7b

How would you find the derivative of;

dE=(kqz)/(z^2+R^2)^3/2 where k&q are constants and R=0.024 with respect to z??

2. Sep 18, 2008

smallphi

3. Sep 18, 2008

s7b

I have but I end up with a huge mess that is definitely not right..

4. Sep 18, 2008

smallphi

It's quotent rule and chain rule. Final result is two terms that can be left separate or taken under common denominator.