If `tan^(- 1)(1/x)+cot^(- 1)(x)=-pi/2` then the number of solution (s) of the equation is

Let x_(1) satisfies the equation tan^(-1)((x+1)/(x-1))+tan^(-1)((x-1)/(x))=(pi)/(2)+cot^(-1)(7) and x_(2) be the number of solutions of the equation sin x=(x^(2))/(200) ,then

tan^(-1) (cot x) +cot^(-1)(tan x) =pi -2x

If cot^(-1)x+tan^(-1)(1/2)=pi/4 then x is

If cot^(-1)x+tan^(-1)(1/2)=pi/4 then x is

The number of solutions of the equation tan2x*tan x=1 x in[0,2 pi] is

Number of solution(s) of the equation f(x)=tan^(-1)x, is not correct

Number of solution(s) of the equation 2tan^(-1)(2x-1)=cos^(-1)(x) is :

Number of solution(s) of the equation 2tan^(-1)(2x-1)=cos^(-1)(x) is :