If l and m are respectively the order and the degree of the differential equation f ( x ) y ′′ + g ( x ) y ′ = x 4 y whose general solution is y = a x 2 + b lo g x , then f ( m ) + g ( m ) =

Question

If l and m are respectively the order and the degree of the differential equation f ( x ) y ′′ + g ( x ) y ′ = x 4 y ​ whose general solution is y = a x 2 + b lo g x , then f ( m ) + g ( m ) =, 2 l, l, 3 m, l + m

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