Mathematics · Trigonometry
If the equation 2 cot−1(x2 + 2x + k) = π − 3 tan−1(x2 + 2x + k) has two distinct real solutions, then all possible values of k lie in the interval:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(−∞, 1)
- 2(−∞, ∞)
- 3(1, ∞)✓
- 4(−1, 2)
Correct answer
(1, ∞)
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