Tập nghiệm của phương trình \(2\sin 2x + 1 = 0\) là:
A.\(S = \left\{ { - \dfrac{\pi }{6} + k\pi ,\,\,\dfrac{{7\pi }}{{12}} + k\pi ,\,\,k \in \mathbb{Z}} \right\}\)
B.\(S = \left\{ { - \dfrac{\pi }{{12}} + k\pi ,\,\,\dfrac{{7\pi }}{{12}} + k\pi ,\,\,k \in \mathbb{Z}} \right\}\)
C.\(S = \left\{ { - \dfrac{\pi }{6} + k2\pi ,\,\,\dfrac{{7\pi }}{{12}} + k2\pi ,\,\,k \in \mathbb{Z}} \right\}\)
D.\(S = \left\{ { - \dfrac{\pi }{{12}} + k2\pi ,\,\,\dfrac{{7\pi }}{{12}} + k2\pi ,\,\,k \in \mathbb{Z}} \right\}\)
A.\(S = \left\{ { - \dfrac{\pi }{6} + k\pi ,\,\,\dfrac{{7\pi }}{{12}} + k\pi ,\,\,k \in \mathbb{Z}} \right\}\)
B.\(S = \left\{ { - \dfrac{\pi }{{12}} + k\pi ,\,\,\dfrac{{7\pi }}{{12}} + k\pi ,\,\,k \in \mathbb{Z}} \right\}\)
C.\(S = \left\{ { - \dfrac{\pi }{6} + k2\pi ,\,\,\dfrac{{7\pi }}{{12}} + k2\pi ,\,\,k \in \mathbb{Z}} \right\}\)
D.\(S = \left\{ { - \dfrac{\pi }{{12}} + k2\pi ,\,\,\dfrac{{7\pi }}{{12}} + k2\pi ,\,\,k \in \mathbb{Z}} \right\}\)
Loga
Hóa Học lớp 12
