1:)
differentiate with respect to x
sec^{-1}\frac{(x+1)}{(x-1)}+ sin^{-1}\frac{(x-1)}{(x+1)}
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4 Answers
62sec^{-1}\frac{(x+1)}{(x-1)}+ sin^{-1}\frac{(x-1)}{(x+1)}
=sec^{-1}(1+\frac{2}{(x-1)})+ sin^{-1}(1+\frac{2}{(x-1)})
Now can you try? :)