Tìm tập xác định \(D\) của hàm số sau \(y = \dfrac{{2\sin x - 1}}{{\tan 2x + \sqrt 3 }}\).
A.\(D = \mathbb{R}\backslash \left\{ {\dfrac{\pi }{6} + k\dfrac{\pi }{2};\dfrac{\pi }{4} + k\dfrac{\pi }{2}|k \in {\rm Z}} \right\}\)
B.\(D = \mathbb{R}\backslash \left\{ { - \dfrac{\pi }{3} + k\pi ;\dfrac{\pi }{2} + k\pi |k \in {\rm Z}} \right\}\)
C.\(D = \mathbb{R}\backslash \left\{ { - \dfrac{\pi }{6} + k\dfrac{\pi }{2}|k \in {\rm Z}} \right\}\)
D.\(D = \mathbb{R}\backslash \left\{ { - \dfrac{\pi }{6} + k\dfrac{\pi }{2};\dfrac{\pi }{4} + k\dfrac{\pi }{2}|k \in {\rm Z}} \right\}\)
A.\(D = \mathbb{R}\backslash \left\{ {\dfrac{\pi }{6} + k\dfrac{\pi }{2};\dfrac{\pi }{4} + k\dfrac{\pi }{2}|k \in {\rm Z}} \right\}\)
B.\(D = \mathbb{R}\backslash \left\{ { - \dfrac{\pi }{3} + k\pi ;\dfrac{\pi }{2} + k\pi |k \in {\rm Z}} \right\}\)
C.\(D = \mathbb{R}\backslash \left\{ { - \dfrac{\pi }{6} + k\dfrac{\pi }{2}|k \in {\rm Z}} \right\}\)
D.\(D = \mathbb{R}\backslash \left\{ { - \dfrac{\pi }{6} + k\dfrac{\pi }{2};\dfrac{\pi }{4} + k\dfrac{\pi }{2}|k \in {\rm Z}} \right\}\)
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Hóa Học lớp 12
