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Let y = (A + Bx) e^(3x) is a solution of...

Let `y = (A + Bx) e^(3x)` is a solution of the differential equation`(d^2y)/dx^2+mdy/dx+ny = 0,m,n in I,` then

A

`m=-6`

B

`n=-6`

C

`m=9`

D

`n=9`

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The correct Answer is:
A,D
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