Trắc nghiệm Phương trình lượng giác cơ bản có đáp án (Nhận biết)

A. m = -3

B. m = -2

C. m = 0

D. m = 3

A. $\left(\begin{array}{c}x=\alpha +k\pi \\ x=\pi -\alpha +k\pi \end{array}\right)\left(k\in Z\right)$

B. $\left(\begin{array}{c}x=\alpha +k2\pi \\ x=\pi -\alpha +k2\pi \end{array}\right)\left(k\in Z\right)$

C. $\left(\begin{array}{c}x=\alpha +k2\pi \\ x=-\alpha +k2\pi \end{array}\right)\left(k\in Z\right)$

D. $\left(\begin{array}{c}x=\alpha +k\pi \\ x=-\alpha +k\pi \end{array}\right)\left(k\in Z\right)$

A. $x=-\frac{\pi }{2}+k\pi \left(k\in Z\right)$

B. $x=\frac{\pi }{2}+k\pi \left(k\in Z\right)$

C. $x=-\frac{\pi }{2}+k2\pi \left(k\in Z\right)$

D. $x=-\pi +k2\pi \left(k\in Z\right)$

A. $x=\frac{5\pi }{6}+k2\pi$

B. $x=\frac{\pi }{6}$

C. $x=\frac{5\pi }{6}$

D. $x=\frac{\pi }{3}$

A. $x=\frac{\pi }{3}+k2\pi$

B. $x=\frac{\pi }{6}+k\pi$

C. $x=k\pi$

D. $x=-\frac{11\pi }{6}+k2\pi$

A. $x=\frac{\pi }{2}+k2\pi$

B. $x=\frac{k\pi }{2}$

C. $x=k2\pi$

D. $x=\frac{\pi }{6}+k2\pi$

A. $x=\pm \frac{\pi }{2}+k2\pi$

B. $x=\frac{\pi }{4}+k\frac{\pi }{2}$

C. $x=\pm \frac{\pi }{3}+k2\pi$

D. $x=\pm \frac{\pi }{4}+k2\pi$

A. $\left(\begin{array}{c}x=\frac{\pi }{6}+k2\pi \\ x=\frac{5\pi }{6}+k2\pi \end{array}\right)(k\in Z)$

B. $\left(\begin{array}{c}x=\frac{\pi }{6}+k2\pi \\ x=-\frac{\pi }{6}+k2\pi \end{array}\right)(k\in Z)$

C. $\left(\begin{array}{c}x=\frac{\pi }{3}+k2\pi \\ x=\frac{2\pi }{3}+k2\pi \end{array}\right)(k\in Z)$

D. $\left(\begin{array}{c}x=\frac{\pi }{3}+k2\pi \\ x=-\frac{\pi }{3}+k2\pi \end{array}\right)(k\in Z)$

A. $x=\frac{\pi }{3}+k\pi$

B. $x=\frac{\pi }{2}+k2\pi$

C. $x=-\frac{\pi }{6}+k\pi$

D. $x=-\frac{\pi }{3}+k\pi$

A. $x=-\frac{\pi }{6}+k\pi$

B. $x=\frac{\pi }{6}+k\pi$

C. Vô nghiệm

D. $x=\pm \frac{\pi }{3}+k\pi$

A. $x=\frac{\pi }{2}+k\pi$

B. $x=k\pi ;x=\frac{\pi }{4}+k\frac{\pi }{2}$

C. $x=k2\pi$

D. $x=\frac{\pi }{2}+k\pi ;k=k2\pi$

A. $x=\frac{\pi }{2}$

B. $x=\pi$

C. $x=0$

D. $x=-\frac{\pi }{2}$

A. $x=\frac{\pi }{3}+k\pi ,k\in Z$

B. $x=\frac{\pi }{2}+k2\pi ,k\in Z$

C. $x=\frac{2\pi }{3}+k\pi ,k\in Z$

D. $x=k\pi ,k\in Z$

A. $R\setminus \left(\frac{k\pi }{2},k\in Z\right)$

B. $R\setminus \left(\frac{\pi }{2}+k\pi ,k\in Z\right)$

C. $R\setminus \left(k\pi ,k\in Z\right)$

D. R

A. $D=ℝ\setminus \left(\frac{\pi }{6}+k\frac{\pi }{2};\frac{\pi }{4}+k\frac{\pi }{2}|k\in \text{Z}\right)$

B. $D=ℝ\setminus \left(-\frac{\pi }{3}+k\pi ;\frac{\pi }{2}+k\pi |k\in \text{Z}\right)$

C. $D=ℝ\setminus \left(-\frac{\pi }{6}+k\frac{\pi }{2}|k\in \text{Z}\right)$

D. $D=ℝ\setminus \left(-\frac{\pi }{6}+k\frac{\pi }{2};\frac{\pi }{4}+k\frac{\pi }{2}|k\in \text{Z}\right)$