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To the left of the graph area you will find a text box in which you can type in
your function. There is no limit of the number of functions you can add on a single
graph. After the a function is added you may hide it, delete and edit it. The grapher
supports single variable functions. Use 'x' as the variable of the function.
See Function Input section in this help for more information.
Using The Graph
Use your mouse to drag the graph. Click on the graph and hold the left button pressed while moving the mouse, the graph will move with it.
Use your mouse wheel to zoom out and in. You can also use SHIFT + Mouse to zoom. Press and hold SHIFT while holding the left button of your mouse, while moving your mouse.
Same as zooming but for each axis seperetaly. Hold CTRL button while pressing the left button of your mouse and moving it.