Number of values of m in N for which y=...

Number of values of `m in N` for which `y=e^(m x)` is a solution of the differential equation `(d^3y)/(dx^3)-3(d^2y)/(dx^2)-4(dy)/(dx)+12 y=0` (a) 0 (b) 1 (c) 2 (d) More than 2

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2

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