1. Plot the function er on [-10,50] 2. Plot functions on x, sinx, x sin x on [-4, 4] 2 3. Find the absolute extrema of the function f(x) = xe-on [1,3] by 1. Finding the critical number(s) 2. Analyzing the derivatives on each interval based on the critical numbers 3. Evaluate the function on the end points 4. Finding the extrema of all those values.