File list (Check if you may need any files):
directnumsol
............\aberror1.fig
............\bvp.asv
............\Cranknicolson.asv
............\Cranknicolson2.asv
............\Cranknicolson3.asv
............\Cranknicolson4.asv
............\dimone
............\......\bvpfun.m
............\......\Cranknicolson1.asv
............\......\Cranknicolson1.m
............\......\Cranknicolson2.m
............\......\Cranknicolson3.m
............\......\Cranknicolson4.m
............\......\Euler1.m
............\......\Euler2.m
............\......\forwardEuler.m
............\......\Guass_seid_implicit.asv
............\......\Guass_seid_implicit.m
............\......\Guass_seid_implicit2.m
............\......\impEuler.m
............\......\implicityEuler.m
............\......\iniCrank.m
............\......\pdepemethod
............\......\...........\pdetest1.asv
............\......\...........\pdetest1.m
............\......\...........\pdetest2.asv
............\......\...........\pdetest2.m
............\......\...........\pdetest3.asv
............\......\...........\pdetest3.m
............\......\...........\pdex1.asv
............\......\...........\pdex1.m
............\......\pesai1.m
............\......\pesai2.m
............\......\poissonfd.m
............\dimtwo
............\......\eg161direct.asv
............\......\eg161direct.m
............\Euler.asv
............\Euler1.asv
............\f5.bmp
............\f6.bmp
............\f7.bmp
............\f8.bmp
............\forwardEuler.asv
............\html
............\....\Cranknicolson3.doc
............\impEuler.asv
............\implicityEuler.asv
............\poissonfd.asv
............\s.bmp
............\SCprograms
............\..........\bisection.m
............\..........\bvp.m
............\..........\eigpower.m
............\..........\feuler.m
............\..........\gershcircles.m
............\..........\illcond.m
............\..........\invshift.m
............\..........\itermeth.m
............\..........\lu_gauss.m
............\..........\midpointc.m
............\..........\newton.m
............\..........\poissonfd.asv
............\..........\poissonfd.m
............\..........\power.m
............\..........\simpadpt.m
............\..........\simpsonc.m
............\..........\trapc.m
............\..........\volterra.m
............\问题2小程序
............\...........\xiaobao.m
............\...........\xiaobao2.m
............\...........\计算区域示意图.doc