Function - Domain and Range

Domain and Range of greatest integer function is

• Domain = R, Range = R

• Domain = Z, Integer = Z

• Domain = R, Range = Z

• Domain = Z, Range = R

Domain and Range of Signum Function is

• Domain = R, Range = {- 1, 0, 1}

• Domain = R, Range = R

• Domain = {- 1, 0, 1}, Range = R

• none of these

Domain and Range of Modulus function is

• Domain = R, Range = R

• Domain = $\left(-\ \infty,\ 0\right)$ , Range = R

• $Domain=\left(0,\ \infty\right),\ Range\ =\left[0,\ \infty\right)$

• $Domain=R,\ Range\ =\left[0,\ \infty\right)$

Domain and Range of Identity function is

• Domain = R, Range = R

• Domain = R, Range = Z

• Domain = Z, Range = Z

• none of these

Range of Constant Function is

• R

• {k}, k = constant

• Z

• none of these

Range of $f\left(x\right)=\frac{\left(x^2-1\right)}{x-1}$ is 

• R

• R - {1}

• R - {2}

• none of these

Range of $f\left(x\right)=\left|x\right|+1$ is 

•  $\left[0,\ \infty\right)$  

•  $\left[1,\ \infty\right)$  

• R

• none of these