First of all, thanks for replying, I'm still working on fixing the 2nd question, but i think i got the first one, the answer should be:
y' = (5x^4 e^-3x) + (x^5 -3e^-3x)
For both questions i have to find dy/dx
1. y=x^5e^-3x
I got (5x^4 e^-3x) + (x^5 (-3xe^-3x-1))
some how that doesn't look right to me. not too sure...
2.
1-e^-x
y= --------
1+e^2x
My answer was:
(e^-x) - (1-e^-x) (2xe^2x-1)...