This tool can be operator in two different manners. To zoom in on a point on the graph, click on it. To zoom in on a specific section of the graph, hold and drag the mouse to form a rectangle, which will be the new axes ranges when the mouse button is released.

The tool can also be used in two different manners. To zoom out and center on a point, click on that point. To fit the existing view into a rectangle, hold and drag the mouse to form that rectangle.

The scale will be adapted to trigonometric functions. This works both for radians and degrees.

Resets the view.

Displays the Coordinate System dialog box. See the section called “Coordinate System Configuration”.

Toggles the visibility of the slider dialog. In the dialog move a slider to change the parameter of the function plot connected to it.

Enable this on the Function tab and select one of the sliders to change the parameter value dynamically. The values vary from 0 (left) to 10 (right) by default, but can be changed in the slider dialog.

For a small tutorial see Using Sliders.