Figure 13.5. The plots show the result of solving a differential equation numerically with the quadratic Taylor
method. The plot in (a) show the first two steps for the equation x 0 = t − 1/(1 + x) with x(0) = 1 and h = 0.5,
while the plot in (b) show the first two steps for the equation x0 = cos(3t/2) − 1/(1 + x) with x(0) = 1 and
h = 0.5. The dots show the computed approximations, while the solid curves show the parabolas that are used
to compute the approximations. The exact solution is shown by the dashed curve in both cases.