Consider the function f'(x)=x^2e^{-x}f(x)=x2ex. The graph of y=f'(x)y=f(x) for 1\leq x\leq 51x5 is pictured below.

The first image depicts an estimate of the area under the graph using L_4L4:

Area Estimates 7 Consider the function f (x) = ale . The graph ofy = f'(x) for 1 x