Bộ 10 Đề kiểm tra học kì I Chuyên đề toán 11: Kiểm tra 15 phút có đáp án (Đề 1)

A. $T=3\pi$

B. $T=6\pi$

C. $T=9\pi$

D. $T=12\pi$

A. $\sin x=\sin \alpha \iff \left[\begin{array}{l}x=\alpha +k2\pi \\ x=-\alpha +k2\pi \end{array}\right.$

B. $\cos x=\cos \alpha \iff \left[\begin{array}{l}x=\alpha +k2\pi \\ x=\pi -\alpha +k2\pi \end{array}\right.$

C. $S=\left\{-\frac{\pi }{6}+k3\pi ,\frac{7\pi }{6}+k3\pi ,k\in \mathbb{Z}\right\}$

D. $S=\left\{-\frac{\pi }{6}+k\frac{\pi }{2},\frac{7\pi }{6}+k\frac{\pi }{2},k\in \mathbb{Z}\right\}$

A. $S=\left\{-\frac{\pi }{6}+k\pi ,\frac{7\pi }{6}+k\pi ,k\in \mathbb{Z}\right\}$

B. $S=\left\{-\frac{\pi }{6}+k2\pi ,\frac{7\pi }{6}+k2\pi ,k\in \mathbb{Z}\right\}$

C. $S=\left\{-\frac{\pi }{6}+k3\pi ,\frac{7\pi }{6}+k3\pi ,k\in \mathbb{Z}\right\}$

D. $S=\left\{-\frac{\pi }{6}+k\frac{\pi }{2},\frac{7\pi }{6}+k\frac{\pi }{2},k\in \mathbb{Z}\right\}$

A. $\left[\begin{array}{l}\cos x=-\frac{1}{2}\\ \cos x=-\frac{3}{2}\end{array}\right.$

B. $\left[\begin{array}{l}\sin x=-\frac{1}{2}\\ \sin x=\frac{\sqrt{3}}{2}\end{array}\right.$

C. $\sin x=-\frac{1}{2}$

D. $\left[\begin{array}{l}\cos x=\frac{2+\sqrt{11}}{2}\\ \cos x=\frac{2-\sqrt{11}}{2}\end{array}\right.$

A. 1

B. 0

C. 2

D. 3

A. $m\in \left(-\infty ;-1\right)\cup \left(1;+\infty \right)$

B. $m\in \left[-1;1\right]$

C. $m\in \left(-\infty ;+\infty \right)$

D. $m\in \left(-\infty ;0\right)\cup \left(0;+\infty \right)$

A. 3

B. 2

C. 0

D. 1

A. $S=\left\{\frac{5\pi }{36}+\frac{k\pi }{2},\frac{11\pi }{36}+\frac{k\pi }{2},k\in \mathbb{Z}\right\}$

B. $S=\left\{\frac{5\pi }{36}+\frac{k\pi }{3},\frac{11\pi }{36}+\frac{k\pi }{3},k\in \mathbb{Z}\right\}$

C. $S=\left\{\frac{5\pi }{36}+\frac{k2\pi }{3},\frac{11\pi }{36}+\frac{k2\pi }{3},k\in \mathbb{Z}\right\}$

D. $S=\left\{\frac{5\pi }{36}+k2\pi ,\frac{11\pi }{36}+k2\pi ,k\in \mathbb{Z}\right\}$

A. S=5

B. S=4

C. S=6

D. $S=\frac{11}{2}$