Tìm tập xác định của hàm số $y=\dfrac{2-\cos x}{1+\tan {\left({x-\dfrac{\pi}{3}}\right)}}$

D = R ∖

$D = \mathbb{R}\backslash$

[{\frac{5 π}{6} + k π, k \in Z} \cup {\frac{π}{12} + k π, k \in Z}]

$\left[ {\left\{ {\dfrac{{5\pi }}{6} + k\pi ,k \in \mathbb{Z}} \right\} \cup \left\{ {\dfrac{\pi }{{12}} + k\pi ,k \in \mathbb{Z}} \right\}} \right]$ .

D = R ∖

$D = \mathbb{R}\backslash$

[{\frac{π}{6} + k π, k \in Z} \cup {\frac{π}{12} + k π, k \in Z}]

$\left[ {\left\{ {\dfrac{{\pi }}{6} + k\pi ,k \in \mathbb{Z}} \right\} \cup \left\{ {\dfrac{\pi }{{12}} + k\pi ,k \in \mathbb{Z}} \right\}} \right]$ .

D = R ∖

$D = \mathbb{R}\backslash$

[{- \frac{5 π}{6} + k π, k \in Z} \cup {\frac{π}{12} + k π, k \in Z}]

$\left[ {\left\{ {-\dfrac{{5\pi }}{6} + k\pi ,k \in \mathbb{Z}} \right\} \cup \left\{ {\dfrac{\pi }{{12}} + k\pi ,k \in \mathbb{Z}} \right\}} \right]$ .

D = R ∖

$D = \mathbb{R}\backslash$

[{\frac{5 π}{6} + k π, k \in Z} \cup {\frac{π}{2} + k π, k \in Z}]

$\left[ {\left\{ {\dfrac{{5\pi }}{6} + k\pi ,k \in \mathbb{Z}} \right\} \cup \left\{ {\dfrac{\pi }{{2}} + k\pi ,k \in \mathbb{Z}} \right\}} \right]$ .