Rational Function
- A function f of the form p/q defined by
where p(x) and q(x) are polynomials, with q(x) 0, is
called a rational function.
Non-decimal vs. Decimal Window
A non-decimal window (or connected mode) connects plotted points.
A decimal window (or dot mode) plots points without connecting the dots.
Use a decimal window when plotting rational functions such as
If y is plotted using a non-decimal window, there would be a vertical line at x = –1, which is not part of the graph