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The integral int(0)^(pi)sqrt(1+4"sin"^2...

The integral `int_(0)^(pi)sqrt(1+4"sin"^2(x)/(2)-4"sin"(x)/(2))` dx is equal to

A

`(2pi)/3-4-4sqrt3`

B

`4sqrt3-4`

C

`4sqrt3-4-pi/3`

D

`pi-4`

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MODERN PUBLICATION-INTEGRALS-COMPETITION FILE
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