Partial Differential Equations in Two or More Dimensions

= c2( + ) + E(x, y) reduces the number of spatial variables until only a two-point boundary-value problem or initial-value problem remains, which is solved by standard methods. ... (x,y)dx = dx. The integral involving the product of the basis functions can be evaluated. Let I = dx = 2dx. From the trigonometric identity: sin x sin y = [( cos(x+y ... ................
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