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The value of the integral int(0)^(n pi +...

The value of the integral `int_(0)^(n pi +1) (| cosx|+|sin x|) dx` is

A

`n`

B

`2n+sin t + cost `

C

`cos t`

D

`sin t - cos t + 4n +1`

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Verified by Experts

The correct Answer is:
D
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