# How do you use the Product Rule to find the derivative of #f(x) = (x^2 + 2x +3)e^-x#?

##### 1 Answer

Aug 9, 2015

#### Answer:

#### Explanation:

Notice that you can write your function as

#f(x) = g(x) * h(x)#

where *product* of two other functions by using the formula

#color(blue)(d/dx(f(x)) = [d/dx(g(x))] * h(x) + g(x) * d/dx(h(x)))#

If you take into account the fact that

you can write