(" in ")tan^(-1)(2x+1)

Let x_(1) , x_(2) , x_(3) be the solution of tan^(-1) ((2x + 1)/(x +1 )) + tan ^(-1) ((2x - 1)/( x -1 )) = 2 tan ^(-1) ( x + 1) " where x_1 2x_(1) + x_(2) + x_(3)^(2) is equal to

Solve : tan ^(-1) ""(x-1)/(x+1) + tan^(-1) ""(2x -1)/(2x+1)= tan ^(-1) "" (23)/(36)

Evaluate: int tan^(-1)((2x)/(1-x^(2)))dx

Evaluate int tan^(-1)((2x)/(1-x^(2))) dx

Evaluate int"tan"^(-1)((2x)/(1-x^(2)))dx

If x gt 1 then 2tan^(-1)x - tan^(-1) ((2x)/(1-x^(2))) =______.

Solve tan^(-1)x +"tan"^(-1) (2x)/(1-x^(2))=(pi)/(2) .