1. Obtain the solution to the initial-value problem (1) for the given f(x, y), a, and b, and give the relations that define the nodal lines of w, if any. Let c=1 in each case.
(e) f(x, y) = 1.05 sin 3x sin y - sin x sin 3y, a = pi, b = 2pi
An IVP is solved. The solution is detailed and well presented.