偏微分方程
..........\1
..........\.\heat.m
..........\.\my_class.m
..........\2
..........\.\f.m
..........\.\heat_im.m
..........\.\uexact.m
..........\3
..........\.\heatc.m
..........\.\heatcb.m
..........\.\uexact.m
..........\4
..........\.\flow_25.m
..........\.\u1exact.m
..........\5
..........\.\f1.m
..........\.\uexact.m
..........\.\wave_im.m
..........\6
..........\.\drive.m
..........\.\my_gauss.m
..........\7
..........\.\f2.m
..........\.\trid.m
..........\.\uexact2.m
..........\8
..........\.\poisson_drive.m
..........\.\poisson_sor.m
..........\9
..........\.\f3.m
..........\.\poisson_sor_b.m
..........\.\uexact3.m
..........\.\ux3.m