• Download the m-files dirfield.m and vectfield.m and save them in the same directory where your m-files for the homework are.
• Download Euler.m and try out the examples in Using the Euler method in Matlab
• Read chapters 2, 3, 4 in "Differential Equations with Matlab".
  Try the commands on a computer! Then do the Practice Problem Set until 9/13 (will not be collected):
  in Problem Set A (p. 47): problem 3 (do (a), (b) with both ezplot and plot), problems 5, 7, 8, problem 11 (in (b) use ezplot twice with hold on, do not use the parametrization)
  Solutions: problem 3 (m-file), problem 5 (m-file), problem 7 (m-file), problem 8 (m-file), problem 11 (m-file).