Bài tập 1.40 trang 40 SBT Toán 11

A. \(M = 7\)                         

B. \(M = 5\)

C. \(M = 6\)                         

D. \(M = 8\)

A. \(5\sin x - 2\cos x = 3\)

B. \(\sin x + \cos x = 2\)

C. \(\sin x - 4\cos x =  - 5\)

D. \(\cos x + \sqrt 3 \sin x = 3\)

A. \(x =  - \dfrac{\pi }{4} + k2\pi \)

B. \(x = \dfrac{{3\pi }}{8} + k\pi \)

C. \(x =  - \dfrac{\pi }{8} + k\pi \)

D. \(x = \dfrac{\pi }{4} + k\pi \)

A. \(P = 0\)  

B. \(P = \dfrac{1}{2}\)

C. \(P = 1\)      

D. \(P =  - 1\)

A. \(D = \mathbb{R}\backslash \left\{ {k\pi ,\,\,k \in \mathbb{Z}} \right\}\)

B. \(D = \mathbb{R}\backslash \left\{ {k2\pi ,\,\,k \in \mathbb{Z}} \right\}\)

C. \(D = \mathbb{R}\backslash \left\{ {\dfrac{\pi }{2} + k\pi ,\,\,k \in \mathbb{Z}} \right\}\)

D. \(D = \mathbb{R}\backslash \left\{ {\dfrac{\pi }{2} + k2\pi ,\,\,k \in \mathbb{Z}} \right\}\)

A. \(x =  \pm \dfrac{\pi }{4} + k\pi \)

B. \(x =  \pm \dfrac{\pi }{{12}} + k\pi \)

C. \(x =  \pm \dfrac{\pi }{8} + k\dfrac{\pi }{2}\)

D. \(x =  \pm \dfrac{\pi }{{12}} + k\dfrac{\pi }{3}\)