1.The complete solution set of the inequality [cot−1x]2−6[cot−1x]+9≤0[\cot^{-1} x]^2 - 6[\cot^{-1} x] + 9 \le 0[cot−1x]2−6[cot−1x]+9≤0, where [⋅][\cdot][⋅] denotes greatest integer function, isa.(−∞,cot3](-\infty, \cot 3](−∞,cot3]b.[cot3,cot2][\cot 3, \cot 2][cot3,cot2]c.[cot3,∞)[\cot 3, \infty)[cot3,∞)d.(−∞,cot2](-\infty, \cot 2](−∞,cot2]Login to continueOnly logged in users canattempt or see the solution.
