# Plot your own graphs using JSXGraph graphing calculator

You can plot 3 functions, **function 1** (in blue), **function 2** (in green) and **function 3** (in magenta).

Edit your function and then click the "Plot" button. The first one, *f*_{1}(*x*), is done as an example.

See below for more instructions.

### Directions if you are on a desktop

You can **zoom** in and out of the graph by holding down the Shift key and using mouse scroll wheel. You can zoom in the `x`- or `y`-directions only by choosing the option near the top of the graph, then scrolling with the mouse wheel.

You can **pan** the graph (move it up, down, left, right) by holding the Shift key and dragging the graph with the mouse.

(Zooming and panning gets pretty slow if you are trying to graph 3 curves at once. Suggestion: "Clear" the graphs, then set up the zoom and pan as desired, then "plot" the graphs again.)

### Directions if you are on a mobile device

You may have some success with pinching the graph. Results not guaranteed!

## Some graphs to try

The grapher will accept any of the following functions (use the notation shown. You can copy from the examples below if you wish.):

**Straight lines:**(like`3x - 2`

)**Polynomials:**(like`x^3 + 3x^2 - 5x + 2`

)- Any of the
**trigonometric functions:**`sin(x), cos(x/2), tan(2x), csc(3x), sec(x/4), cot(x)`

- The
**inverse trigonometric functions:**`arcsin(x), arccos(x), arctan(x), arccsc(x), arcsec(x), arccot(x)`

**Exponential**(`e^x`

) and**logarithm**(`ln(x)`

for natural log and`log(x)`

for log base 10)**Absolute value**: use "abs" like this:`abs(x)`

- The
**hyperbolic functions and their inverses:**`sinh(x), cosh(x), tanh(x), arcsinh(x), arccosh(x), arctanh(x)`

**Sign**(1 if the sign is positive, −1 if the sign of the function is negative.) For example, try`sign(sin(x))`

In fact, you can use most of the javascript math functions, including

**ceiling:**`ceil(x)`

and**round**:`round(x)`

**square root:**`sqrt(x)`

You can also use any combinations of the above, like `ln(abs(x))`

.

**If your graph doesn't work:** Try using brackets! For example, "tan 2x" won't work. You have to put `tan(2x)`

.

## More Information

The above graph is not an image (that is, it's not a .GIF, .JPG or .PNG). It is a **javascript-based graph**. That's why we can change it so easily and not wait for an image to be created.

For more information, see:

JSXGraph: interactive javascript graphs

Credits to:

- The developers of JSXGraph: A "small team" at the University of Bayreuth, Germany.
- David Lippman, for mathjs.js script, which converts "nice" math to javascript math, behind the scenes.

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