For what values of x is #f(x)= xe^-x # concave or convex?
1 Answer
Feb 5, 2017
Explanation:
We need to solve the inequality:
so we start by calculating the second derivative of the function:
using the product rule:
and again:
Now to solve the inequality we need to consider that:
Thus
graph{xe^(-x) [-10, 10, -5, 5]}