27 câu Trắc nghiệm Đại số và Giải tích 11 Bài 2 (Có đáp án): Phương trình lượng giác cơ bản

A. π/2+k4π, k ∈ Z.

B. π/2+kπ, k ∈ Z.

C. π/4+k2π, k ∈ Z.

D. π/4+kπ, k ∈ Z.

A. π/2+k2π, k ∈ Z.

B. 3π/2+k2π, k ∈ Z.

C. 3π/2+k3π, k ∈ Z.

D. kπ, k ∈ Z.

A. $\left\{\frac{\mathrm{\pi }}{6};\frac{11\mathrm{\pi }}{6}\right\}$

B. $\left\{\frac{2\mathrm{\pi }}{3};\frac{4\mathrm{\pi }}{3}\right\}$

C. $\left\{\frac{\mathrm{\pi }}{3};\frac{5\mathrm{\pi }}{3}\right\}$

D. $\left\{\frac{5\mathrm{\pi }}{6};\frac{7\mathrm{\pi }}{6}\right\}$

A. x = kπ, k ∈ Z. 

B. π+k2π, k ∈ Z. 

C. π/2+kπ, k ∈ Z. 

D. ±π/6+kπ, k ∈ Z.

A. x = 2π + k4π, k ∈ Z

B. x = k2π, k ∈ Z.

C. x = π + k2π, k ∈ Z.

D. x = 2π + kπ, k ∈ Z.

A. x = kπ, k ∈ Z.

B. x =kπ/2, k ∈ Z. 

C. x =kπ/3, k ∈ Z.

D. x =kπ/4, k ∈ Z.

A. x = π/4 + kπ, k ∈ Z.

B. x = 3π/4 + kπ, k ∈ Z.

C. x = kπ, k ∈ Z. 

D. x = k2π, k ∈ Z.

A. x = - π/4 + kπ, k ∈ Z.

B. x = π/4 + kπ, k ∈ Z.

C. x = - π/4 + k2π, k ∈ Z.

D. x = π/4 + k2π, k ∈ Z.

A. $\left\{\frac{\mathrm{\pi }}{2}\right\}$

B. $\left\{\frac{\mathrm{\pi }}{2};\frac{3\mathrm{\pi }}{2}\right\}$

C. $\left\{0;\mathrm{\pi }\right\}$

D. $\left\{0;\frac{\mathrm{\pi }}{2};\mathrm{\pi }\right\}$

A. $\left\{\frac{7\mathrm{\pi }}{6};\frac{11\mathrm{\pi }}{6}\right\}$

B. $\left\{\frac{\mathrm{\pi }}{2};\frac{7\mathrm{\pi }}{6};\frac{11\mathrm{\pi }}{6}\right\}$

C. $\left\{\frac{5\mathrm{\pi }}{6};\frac{7\mathrm{\pi }}{6}\right\}$

D. $\left\{\frac{\mathrm{\pi }}{6};\frac{7\mathrm{\pi }}{6};\frac{5\mathrm{\pi }}{6}\right\}$

A. 0

B. 2

C. 1

D. 3

A. 1

B. 0

C. 2

D. 3

A. {2π/3}

B. {3π/2}

C. {π/3; 2π/3}

D. {π/2; 3π/2}

A. {0;π}

B. {0;π/2}

C. {π/2; 3π/2}

D. {0; 3π/2}

A. x = kπ, k ∈ Z.

B. x = π + k2π, k ∈ Z.

C. π/2+kπ, k ∈ Z.

D. π/4+kπ, k ∈ Z.

A. x = π/8+k π/4, k ∈ Z.

B. x = π/4+k π/2, k ∈ Z.

C. x = π/6+k π/3, k ∈ Z.

D. x = π/2+kπ, k ∈ Z.

A. {π/2+kπ, k ∈ Z}

B. {π/2+k2π, k ∈ Z}

C. ∅ 

D. {-π/2+k2π, k ∈ Z}

A. {π/3+k2π, k ∈ Z}

B. {±π/3+k2π, k ∈ Z}

C. {±π/3+k2π, - π/2+k2π, k ∈ Z}

D. {- π/2+k2π, k ∈ Z}

A. {π/4;3π/4}

B. {π/4}

C. {3π/4}

D. {π/6;π/4;3π/4}

A. {π/4+kπ, k ∈ Z}

B. {π/4+kπ/2, k ∈ Z}

C. {π/4+k2π, k ∈ Z}

D. {kπ, k ∈ Z}

A. x = ±5π/3 +k4π

B. x = ±5π/6 +k2π

C. x = ±5π/6 +k4π

D. x = ±5π/3 +kπ

A. \[\frac{\pi }{3} + k\pi ,\,\,k \in \mathbb{Z}\]

B. \[\frac{{ - \pi }}{3} + k2\pi ,\,\,k \in \mathbb{Z}\]

C. \[\frac{\pi }{6} + k\pi ,\,\,k \in \mathbb{Z}\]

D. \[\frac{{ - \pi }}{3} + k\pi ,\,\,k \in \mathbb{Z}\]

A. $\sin x=-1 \iff x=-\frac{\mathrm{\pi }}{2}+k2\mathrm{\pi }$

B. $\sin x=0 \iff x=k\mathrm{\pi }$

C. $\sin x=0 \iff x=k2\mathrm{\pi }$

D. $\sin x=1 \iff x=\frac{\mathrm{\pi }}{2}+k2\mathrm{\pi }$

A. $x=k\mathrm{\pi } \mathrm{hoặc} \mathrm{x}=\mathrm{k}2\mathrm{\pi }\pm \frac{\mathrm{\pi }}{6}$

B. $x=k\mathrm{\pi } \mathrm{hoặc} \mathrm{x}=\mathrm{k\pi }\pm \frac{\mathrm{\pi }}{6}$

C. $x=k2\mathrm{\pi } \mathrm{hoặc} \mathrm{x}=\mathrm{k}2\mathrm{\pi }\pm \frac{\mathrm{\pi }}{3}$

D. $x=\pm \frac{\mathrm{\pi }}{6}+\mathrm{k}2\mathrm{\pi }$

A. x = π/2

B. x = 0

C. x = π

D. x = - π/2

A. 1

B. 4

C. 5

D. 2