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General

General questions about using GraphFree and other topics that don't fit elsewhere.

List of Built-in Functions
Basic Math & Algebra
- abs (absolute value)
- sqrt (square root)
- cbrt (cube root)
- nthroot (nthroot(5, x) is the fifth root of x.)
Logarithms
- ln(…
How to Enter Expressions
Note: Many of the examples include spaces for readability, but the spaces are never required.

Basic Examples
- 4x+2
- sin(x)
- x(x+1)(x+3)
- 3 / (x + 2)…
Plot Sizes

Valid Range

The dimensions of a plot must be between 100 and 900 pixels.

Just the Grid Area

The width and/or height you specify refer only to the…
Entering Custom Colors
You may enter custom colors in either hex or HSL format.

As Hex Codes

You may use 3 or 6 character hex format.
- #ff9999
- #5ed
You may also enter captial…
Shading

Basic Shading

You can shade the region above, below, or between curves in GraphFree by entering a single point in the interior of the region you…
Labels in Terms of Pi

GraphFree automatically detects when your gird labels are common fractions of π and labels them accordingly. (If you’re used to older…
The Plots Panel

To add a new plot, click the Add New Plot button, and select the type of plot you wish. The types of plots available differ according to the grid…
Graphing Vertical Lines

There are two different ways to graph a vertical line in GraphFree. One is to use the Conic/Implicit plot. The other is to use the Asymptote plot…
Adding Math Symbols to Texts

There are multiple ways to add special mathematical symbols and other non-keyboard characters to your texts. All of these methods work for…
Positioning Texts on the Graph

There are two ways to reposition the various texts on your graph. The techniques described here apply to any text—axis labels, grid labels,…