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When solving a 1-Dimensional heat equation using a variable separable method, we get the solution if ______________

When solving a 1-Dimensional heat equation using a variable separable method, we get the solution if ______________ Correct Answer k is negative

Since this is a heat equation, the solution must be a transient solution, that is it should decay as time increases. This happens only when k is negative and the solution comes out to be (c’’cospx + c’’’sinpx) (c e-c2 p2 t).

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