4+e^x cos(3x) Find a linear differential operator that annihilates the given function. (Use D for the differential operator.)

 4+e^x cos(3x) Find a linear differential operator that annihilates the given function. (Use D for the differential operator.)

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4+e^x cos(3x) Find a linear differential operator that annihilates the given function. (Use D for the differential operator.)

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