The quotient of the identity function and reciprocal function is 

The domain of the function $f\left(x\right)=\frac{2x+1}{x^2-3x+2}$ is

The range of the function $f\left(x\right)=\left|x-3\right|, x\in R$ is,

The range of the function $f\left(x\right)=\frac{\left|x\right|}{x}, x\in R$ is

If $f\left(x\right)=\sqrt{x}$ and $g\left(x\right)=\sqrt[3]{x}$ be two functions defined over the set of non-negative real numbers, then the value of $\frac{f}{g}\left(64\right)$ is