Đề kiểm tra 15 phút chương 1: Hàm số lượng giác và phương trình lượng giác - Đề số 3

\(x = \dfrac{\pi }{2} + k2\pi \).

\(x = k2\pi \).

\(x = \dfrac{\pi }{6} + k2\pi \).

\(y = \sin x\)

\(y = \cos x\)

\(y = \sin 2x\)  

\(\dfrac{\pi }{3}\)

\(\dfrac{{4\pi }}{3}\)

\(\dfrac{{7\pi }}{3}\)

\(\max y = 4;\min y = \dfrac{3}{4}\)

\(\max y = 3;\min y = 2\)

\(\max y = 4;\min y = 2\)

\(x =  - \dfrac{\pi }{2} + k\pi \left( {k \in Z} \right)\)

\(x = \dfrac{\pi }{2} + k\pi \left( {k \in Z} \right)\)

\(x =  - \pi  + k2\pi \left( {k \in Z} \right)\)

\(\left( {\dfrac{\pi }{2} + k2\pi ;\dfrac{{3\pi }}{2} + k2\pi } \right)\)

\(\left( { - \pi  + k2\pi ;k2\pi } \right)\)

\(R\)

\(y = {x^2} - \sin x\)

\(y = {x^2} + \sin x\)

\(y = {x^3} - \sin x\)

\(R\backslash \left\{ {k\pi ,k \in Z} \right\}\)

\(R\backslash \left\{ {\dfrac{{k\pi }}{2},k \in Z} \right\}\)

\(R\backslash \left\{ {\dfrac{\pi }{2} + k\pi ,k \in Z} \right\}\)

\(m =  - 3\)

\(m =  - 2\)      

\(m = 3\)

\(\max y = 6;\min y =  - 2\)

\(\max y = 4;\min y =  - 4\)

\(\max y = 6;\min y =  - 1\)

\(R\backslash \left\{ {\dfrac{\pi }{2} + k\pi ,k \in Z} \right\}\)

\(R\backslash \left\{ {k\pi ,k \in Z} \right\}\)

\(R\)

\(x = k2\pi ,x = \dfrac{\pi }{2} + k2\pi \left( {k \in Z} \right)\)

\(x = k\pi ,x = \dfrac{\pi }{4} + k\pi \left( {k \in Z} \right)\)

\(x = \dfrac{\pi }{8} + \dfrac{{k\pi }}{2},x =  - \dfrac{\pi }{4} + k\pi \left( {k \in Z} \right)\)