Đề thi giữa HK1 môn Toán 11 năm 2020 trường THPT L...

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

A. \([-1; 1] \)

B. \([-2; 2]\)

C. \([-3; 3]\)

D. \([-4; 4]\)

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. Hàm số chẵn

B. Hàm số lẻ

C. Hàm số không chẵn, không lẻ

D. Hàm số vừa chẵn, vừa lẻ

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

B. \(x = {-b \pm \sqrt{b^2-4ac} \over 2a}x = k\pi ; \pm \dfrac{{5\pi }}{{12}} + k\pi ;k \in \mathbb{Z}\)

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

B. \(x = \dfrac{{5\pi }}{{12}} + k2\pi ,\,x = \dfrac{{11\pi }}{{12}} + k2\pi ;\,k \in \mathbb{Z}\)

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. 0

B. \(2\pi\)

C. \(4\pi\)

D. \(6\pi\)

A. 2

B. \(- \dfrac{1}{3}\)

C. \(\dfrac{{ - 1}}{2}\)

D. 1

A. \(x = \dfrac{{ - \pi }}{4} + k2\pi ;x = \arctan \dfrac{{10}}{3} + k2\pi ;k \in \mathbb{Z}\)

B. \(x = \dfrac{{ - \pi }}{4} + k\pi ;x = \arctan \dfrac{7}{2} + k2\pi ;k \in \mathbb{Z}\)

C. \(x = \dfrac{{ - \pi }}{4} + k\pi ;x = \arctan \dfrac{{10}}{3} + k\pi ;k \in \mathbb{Z}\)

D. \(x = \dfrac{{ - \pi }}{4} + k2\pi ;x = \arctan \dfrac{{10}}{3} + k\pi ;k \in \mathbb{Z}\)

A. 3

B. 5

C. 4

D. 6

A. 15

B. 20

C. 72

D. 36

A. n = 3

B. n = 6

C. n = 4

D. n = 8

A. 6

B. 72

C. 720

D. 144

A. 59136 

B. 213012

C. 12373

D. 139412

A. \((C_7^2 + C_6^5) + (C_7^1 + C_6^3) + C_6^4\)

B. \((C_7^2.C_6^2) + (C_7^1.C_6^3) + C_6^4\)

C. \(C_{11}^2.C_{12}^2\)

D. \(C_7^2.C_6^2 + C_7^3.C_6^1 + C_7^4\)

A. 70

B. 42

C. 46

D. 40

A. 140

B. 560

C. 1120

D. 70

A. \(\dfrac{5}{6}\)

B. \(\dfrac{1}{6}\)

C. \(\dfrac{1}{2}\)

D. \(\dfrac{1}{3}\)

A. \(\dfrac{1}{{560}}\)

B. \(\dfrac{9}{{40}}\)

C. \(\dfrac{1}{{28}}\)

D. \(\dfrac{{143}}{{280}}\)

A. 120

B. 256

C. 24

D. 36

A. \(\dfrac{1}{{52}}\)

B. \(\dfrac{2}{{13}}\)

C. \(\dfrac{4}{{13}}\)

D. \(\dfrac{{17}}{{52}}\)

A. 4

B. 7

C. 9

D. 8

A. 39270

B. 47599

C. 14684

D. 38690

A. B

B. C

C. D

D. A

A. \(A'\left( {3;0} \right)\)

B. \(A'\left( { - 3;0} \right)\)

C. \(A'\left( { - 1;3} \right)\)

D. \(A'\left( { - 1;6} \right)\)

A. \(\Delta ':x + 2y - 3 = 0\)

B. \(\Delta ':x + 2y = 0\)

C. \(\Delta ':x + 2y + 1 = 0\)

D. \(\Delta ':x + 2y + 2 = 0\)

A. \(A'(1; - 2)\)

B. \(A'(2;1)\)

C. \(A'( - 2;1)\)

D. \(A'( - 2; - 1)\)

A. \({\left( {x + 1} \right)^2} + {\left( {y - 10} \right)^2} = 36\)

B. \({\left( {x - 2} \right)^2} + {\left( {y - 6} \right)^2} = 3\)

C. \({\left( {x - 1} \right)^2} + {\left( {y - 10} \right)^2} = 36\)

D. \({\left( {x - 2} \right)^2} + {\left( {y + 4} \right)^2} = 36\)