* = = =

II. Derive the modified differential equation (MDE) corresponding to Eq. (11.26). Analyze consistency and order.

12. Perfonn a von Neumann stability analysis of Eq. (11.26). 13.* By hand calculation, solve the convection problem presented in Section ILl

by the Lax method with Ax = 0.1 cm and !1t = 0.5 s for t = 1.0 s. Compare the results with the exact solution.