The domain and range of $y(x) = \cos x - 3$ are respectively
- A$R$ and $[-1, 1]$
- B$R$ and $[-4, -2]$
- C$R \setminus \{0\}$ and $[0, 1]$
- D$R \setminus \{(2n + 1) \frac{\pi}{2}\}$ and $[-1, 1]$
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Consider the following lists.
$A$. $f(x)=\frac{|x+2|}{x+2}, x \neq-2$ $1$. $[\frac{1}{3}, 1]$ $B$. $g(x)=|[x]|, x \in R$ $2$. $Z$ $C$. $h(x)=|x-[x]|, x \in R$ $3$. $W$ $D$. $f(x)=\frac{1}{2-\sin 3x}, x \in R$ $4$. $[0, 1)$ $5$. $\{-1, 1\}$
| $A$. $f(x)=\frac{|x+2|}{x+2}, x \neq-2$ | $1$. $[\frac{1}{3}, 1]$ |
| $B$. $g(x)=|[x]|, x \in R$ | $2$. $Z$ |
| $C$. $h(x)=|x-[x]|, x \in R$ | $3$. $W$ |
| $D$. $f(x)=\frac{1}{2-\sin 3x}, x \in R$ | $4$. $[0, 1)$ |
| $5$. $\{-1, 1\}$ |
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