y=(1+ x^3)*e^x求导

问题描述:

y=(1+ x^3)*e^x求导

y'=(1+x^3)' * e^x + (1+x^3) * (e^x)'
=3x^2 * e^x + (1+x^3) * e^x
= (1+3x^2+x^3)*d^x