. (a) Solve the boundary value problem Ju + Be-12 at where u(0, t) = 0, u(L, t) = 0, u(x,0) = f(x), u(x, t)

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Q: 8. What is the relationship between a and b so that F(x, y) = (ary, 3ax + bry) is source free?

A: That's easy. Have a great day!!!

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