Mathematics

The integral $$\int _{ 0 }^{ \pi  }{ \sqrt { 1+4\sin { ^{ 2 }\frac { x }{ 2 } -4 } \sin { \frac { x }{ 2 }  }  } dx }$$ is equal to 


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$$\pi-4$$


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Single Correct Medium Published on 17th 09, 2020
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