Teaching HSSC TGT 2023 Mock Test (Latest Pattern) Mathematics Trigonometry Inverse Trigonometric Functions

\(\rm sec^{-1} \left[\frac{x^2+1}{x^2-1}\right] =? \)

1
2 tan-1x
2
2 x2
3
2 cot-1x
4
x2
5
Not Attempted
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