Consider the function $$f(x) = \frac{-6 x}{x^2+2 x + 7}$$
Then the range of $f$ is an interval. The left-hand endpoint of this interval is (Write INF for $\infty$ and MINF for $-\infty$ if appropriate.)
Is the left-hand endpoint included in the range of $f$? Answer (Y/N):
The right-hand endpoint of this interval is (Write INF for $\infty$ and MINF for $-\infty$ if appropriate.)
Is the right-hand endpoint included in the range of $f$? Answer (Y/N):