Consider the functions shown in Figure 3.14 (a) and (b). In each case, use the sketch of this function y = f(x) to draw a sketch of the graph of the related function F(x) = R x 0 f(t) dt. (Assume that F(?1) = ?4 in (a), and F(x) = ?0.5 at the left end of the interval in (b).)