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If y = a sin x + (5 + 2x) cos x, " then...

If `y = a sin x + (5 + 2x) cos x, " then " y'' + y =`

A

4 cos x

B

`-4 cos x`

C

`4 sin x`

D

`-4 sin x`

Text Solution

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The correct Answer is:
D
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