Inverse Trigonometric FunctionHard

Question

The solution of the inequality
(tan-1x)2 - 3 tan-1 x + 2 ≥ 0 is -

Options

A.(- ∞, tan 1] υ [tan2, ∞)
B.(-∞, tan1]
C.(- ∞, - tan 1] υ [tan2, ∞)
D.[tan 2, ∞)

Solution

-

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