The sum of all the elements in the range of $f(x) = \text{Sgn}(\sin x) + \text{Sgn}(\cos x) + \text{Sgn}(\tan x) + \text{Sgn}(\cot x)$, where $x \neq \frac{n\pi}{2}, n \in \mathbb{Z}$ and $\text{Sgn}(t) = \begin{cases} 1, & \text{if } t > 0 \\ -1, & \text{if } t < 0 \end{cases}$, is
- A$4$
- B$2$
- C$-2$
- D$0$
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Similar Questions
Match the following functions with their respective ranges:
Function Range $A. f(x) = |x|$ $I. [0, \infty)$ $B. f(x) = x^2$ $II. \mathbb{R}$ $C. f(x) = x^3$ $III. [0, \infty)$ $D. f(x) = \text{sgn}(x)$ $IV. \{-1, 0, 1\}$
| Function | Range |
|---|---|
| $A. f(x) = |x|$ | $I. [0, \infty)$ |
| $B. f(x) = x^2$ | $II. \mathbb{R}$ |
| $C. f(x) = x^3$ | $III. [0, \infty)$ |
| $D. f(x) = \text{sgn}(x)$ | $IV. \{-1, 0, 1\}$ |
If the domain of the function $f(x) = \log_7(1 - \log_4(x^2 - 9x + 18))$ is $(\alpha, \beta) \cup (\gamma, \delta)$,then $\alpha + \beta + \gamma + \delta$ is equal to
DifficultJEE MAIN 2025
View SolutionLet the domain of the function $f(x) = \log_3 \log_5 (7 - \log_2 (x^2 - 10 x + 85)) + \sin^{-1} ( | \frac{3 x - 7}{17 - x} | )$ be $(\alpha, \beta]$. Then $\alpha + \beta$ is equal to :
DifficultJEE MAIN 2026
View SolutionIf $f(x)=\sqrt{2-x^2}$ and $g(x)=\ln (1-x)$ are two real-valued functions,then the domain of the function $(f+g)(x)$ is
The domain of definition of the function $f(x)$ given by the equation $2^x + 2^y = 2$ is
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