Bài tập 1.45 trang 40 SBT Toán 11

\(\begin{array}{l}A.\,x = \dfrac{{7\pi }}{{12}} + k2\pi ;\,x = \dfrac{{11\pi }}{{12}} + k\pi ,\,k \in \mathbb{Z}\\B.\,x = \dfrac{{5\pi }}{{12}} + k2\pi ,\,x = \dfrac{{11\pi }}{{12}} + k2\pi ;\,k \in \mathbb{Z}\end{array}\)

C. \(x = \dfrac{{7\pi }}{{12}} + k2\pi ;x = \dfrac{{11\pi }}{{12}} + k2\pi ;k \in \mathbb{Z}\)

\(D.\,x = \dfrac{{7\pi }}{{12}} + k\pi ;\,x = \dfrac{{11\pi }}{{12}} + k\pi ;\,k \in \mathbb{Z}\)

A. \(\,x = k2\pi ,\,x = \dfrac{{ - 5\pi }}{6} + k\pi ,\,x = \dfrac{{5\pi }}{6} + k2\pi ;\,k \in \mathbb{Z}\)

B. \(x = k\pi ; \pm \dfrac{{5\pi }}{{12}} + k\pi ;k \in \mathbb{Z}\)

C. \(\,x = k\pi ;\,x = \dfrac{{5\pi }}{{12}} + k\pi ;\,k \in \mathbb{Z}\)

D. \(x = \dfrac{{ - 5\pi }}{{12}} + k\dfrac{\pi }{2};k \in \mathbb{Z}\)

\(A.\,x =  - \dfrac{{7\pi }}{{24}} + k\pi ,k \in \mathbb{Z}\)

\(B.\,x = \dfrac{{7\pi }}{{24}} + k\pi ,\,k \in \mathbb{Z}\)

\(C.\,x = \dfrac{\pi }{{24}} + k\dfrac{\pi }{2};\,k \in \mathbb{Z}\)

D. \(x = \dfrac{{ - 7\pi }}{{24}} + k\dfrac{\pi }{2};k \in \mathbb{Z}\)

A. Hàm số chẵn

B. Hàm số lẻ

C. Hàm số không chẵn, không lẻ

D. Hàm số vừa chẵn, vừa lẻ

A. \(x =  - \dfrac{\pi }{{12}} + k2\pi ;\,k \in \mathbb{Z}\)

B. \(x = \dfrac{{7\pi }}{{12}} + k2\pi ;\,k \in \mathbb{Z}\)

C. Cả A và B

D. Đáp án khác

A. [-1; 1]           

B. [-2; 2]

C. [-3; 3]            

D. [-4; 4]

A.\(\left\{ {k\dfrac{\pi }{3};k \in \mathbb{Z}} \right\}\)

B.\(\mathbb{R}\backslash \left\{ {k\dfrac{{2\pi }}{3};k \in \mathbb{Z}} \right\}\)

C.\(\left\{ {\dfrac{{k2\pi }}{3};k \in \mathbb{Z}} \right\}\)

D.\(\mathbb{R}\backslash \left\{ {\dfrac{{k\pi }}{3};k \in \mathbb{Z}} \right\}\)