306ch1m8.mws Chapter 1: First-order equations Direction fields A numerical method: Euler's Euler's method in Maple Estimating the error by repeating the computation with a smaller step size Making sure the step-size h is small enough Euler's method with two different step sizes, for an example problem with an exact solution Plotting a function (such as an analytical solution) What is Maple doing to plot a function? Ranges and labels Combining plots