$$h(x) = \frac{6x^2}{3x^2-2x-1}$$
I know that the domain is excluding $-\frac{1}{3}$ and $1$.
The range is $(2, \infty)$ and $(-\infty, 0)$
How many minimum values need to be plotted in order to find the range of a function?
Like say there's an equation and its range is all values up to 1000. It would be a lot of work to do that on a graph by hand. Is there a shortcut?