For each of the functions of x given differentiate with respect to x.
(For powers of x use ^) - mathematical notation is a little difficult on this - be patient and have fun!
for f(g(x)), i kept writing (f'(g(x)))(g'(x)) which should be right and also for (x^2)e^x, i was writing (x^2)(e^x) + (2x)(e^x) which should also be right.