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I would like to know why you took x2 between -1 and 1, because when i had tested the program for x2 between 0 and 1 it was not well worked?!
Hey, I would like know how to find the field amplitude with equation 26 shown in figure 6 using the listings below: d = 1; lam = d; a = 25*d; b = 100*d ; x2 = 0.5 a; k = 2 \[Pi]/d u[0][x_] := 1; v[0][x_] := 0 Do[{u[q] = ...