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Column I: Function, Column II: Value o...

Column I: Function, Column II: Value of x for which both the functions in any option of column I are identical `f(x)=tan^(-1)((2x)/(1-x^2)),g(x)=2tan^(-1)x` , p. `x in {-1,1}` `f(x)=(log)_(x2)25a n dg(x)=(log)_x5` , q. `x in (-1,1)` `f(x)=sec^(-1)x+cos e c^(-1)x ,g(x)=sin^(-1)x+cos^(-1)x` , r. `x in (0,1)`

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