∫1/x√(x2 - 1) dx = (a) tan-1 x (b) sin-1 x (c) sec-1 x (d) non – InterviewSolution

1.	∫1/x√(x2 - 1) dx = (a) tan-1 x (b) sin-1 x (c) sec-1 x (d) none
Answer» Answer is (c) sec^-1 x

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