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The value of the constant 'm' and 'c' fo...

The value of the constant 'm' and 'c' for which y = mx + c is a solution of the differential equation `D^2y` - 3Dy -4y = -4x is:

A

is m =-1,c`=3//4`

B

is m =1,c`=-3//4`

C

no such real m,c

D

is m =1,c`=3//4`

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The correct Answer is:
B
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