The LimitTutor(f) command launches a tutor interface that examines the limiting behavior of the curve f as the indeterminate approaches the point 0.

If f is not specified, LimitTutor uses a default function.

The LimitTutor(f, pt) command launches a tutor interface that examines the limiting behavior of the curve f as the indeterminate approaches the point pt.

If an expression in one variable is specified, the tutor replaces the variable name with x.

The tutor interface can examine the limiting behavior of the curve f as the indeterminate approaches from the left, right, or both directions.