9x + 12x^2 - sin(4x) Find a linear differential operator that annihilates the given function. (Use D for the differential operator.)

9x + 12x^2 - sin(4x) Find a linear differential operator that annihilates the given function. (Use D for the differential operator.)

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9x + 12x^2 - sin(4x) Find a linear differential operator that annihilates the given function. (Use D for the differential operator.)

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