How do you find the 1st and 2nd derivative of x^2e^x?

1 Answer
Nov 14, 2016

dy/dx = x(x + 2)e^x
(d^2y)/(dx^2) = (x^2 +4x + 2)e^x

Explanation:

By the product rule.

dy/dx = 2x xx e^x + e^x xx x^2

dy/dx = 2xe^x + x^2e^x

dy/dx = x(x + 2)e^x

(d^2y)/(dx^2) = 2 xx e^x + 2x xx e^x + 2x xx e^x + x^2xxe^x

(d^2y)/(dx^2) = 2e^x + 2xe^x + 2xe^x + x^2e^x

(d^2y)/(dx^2) = 2e^x + 4xe^x + x^2e^x

(d^2y)/(dx^2) = (x^2 + 4x +2)e^x

Hopefully this helps!