Mathematics

$$\int  \dfrac { \left( { x }^{ 2 }-1 \right)  }{ \left( { x }^{ 2 }-1 \right) \sqrt { { x }^{ 2 }-1 }  } dx$$ is equal to


ANSWER

$$\sec ^{ -1 }{ \left( \dfrac { { x }^{ 2 }+1 }{ \sqrt { 2x } } \right) +c }$$


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Single Correct Medium Published on 17th 09, 2020
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