The solution set for `[cot^-1x]^2 - 6[cot^-1x] + 9 <= 0` is

The solution set for [cot^(-1)x]^(2)-6[cot^(-1)x]+9<=0 is

The complete solution set of the inequality [cot^(-1)x]^2-6[cot^(-1)x]+9leq0 where [ ] denotes greatest integer function, is

The complete solution set of the inequality [cot^(-1)x]^2-6[cot^(-1)x]+9leq0 where [ ] denotes greatest integer function, is

The solution set of the equation tan^(-1)x-cot^(-1)x=cos^(-1)(2-x) is _____

The complete solution set of the inequality [cot^(-1)x]^(2)-6[cot^(-1)x]+9<=0 where [1] denotes greatest integer function,is

Solution set of inequality (cot^-1x)^2-5cot^-1x+6>0 is

Solution set of inequality (cot^-1x)^2-5cot^-1x+6>0 is (A) (cot 3 , cot2) (B) (-oo, cot3) uu (cot2 , oo) (C) (cot2, oo) (D) None of these

The solution set of the equation 2cos^(-1)x=cot^(-1)((2x^(2)-1)/(2xsqrt(1-x^(2)))) is

cot^-1(-x) = pi - cot^-1x , x in R

The solution set of inequality (cot^(-1)x)(tan^(-1)x)+(2-pi/2)cot^(-1)x-3tan^(-1)x-3(2-pi/2)>0 is (a , b), then the value of cot^(-1)a+cot^(-1)b is____