The horizontal and vertical range specifications define the horizontal and vertical ranges over which the function(s) are displayed.

If no range is specified, a default range is used for the horizontal range. If one range is specified, this is taken as the horizontal range, and a label for the vertical axis may be specified by simply stating the name as a parameter, but not giving it a range. If the vertical range is unspecified, a suitable range will be deduced from the values computed.

The default range is normally  when f is a trigonometric function and  otherwise.

The low and hi elements of an axis range must be real constants. This includes numbers, plus or minus infinity and constants such as Pi and exp(4).

If either infinity or -infinity is included in an axis range specification then an infinity plot is computed.