posted by Steff .
Am I right so far?
=e^x(1/2)(1+x^2)^-1/2(2x) + e^x(1+x^2)^1/2
So I used product rule, chain rule, and exponential function with base e
It's good so far.
You can simplify a little by cancelling the 2's in the numberator and denominator of the first term.