For the grid in Fig. 456 compute the potential at the four internal points by Gauss and by 5 Gauss€“Seidel steps with starting values 100, 100, 100, 100 (showing the details of your work) if the boundary values on the edges are:

u = 220 on the upper and lower edges, 110 on the left and right.

Transcribed Image Text:

3 P22 P12 2 P. P11 21 2 3.