Coordinate Grid
(None) Ticks
Lines Two-Tone
Image Dimensions:
Your browser must support the Canvas tag. Safari, Firefox, Chrome, Opera, and IE 7 or higher should work.

There are lots of Java applets around the net that will give you more flexibility than this applet does. To get an image out of those applets to paste somewhere else though, you have to fight with screen captures and such. Here, you hit the Snapshot button, then right-click in the popup window to save the image.

There isn't much for a function parser there yet. Right now, it is just Javascript's eval(). As such, if you want to do x5 you need to do pow(x,5). If you type x^5, you will be attempting to do the bitwise exclusive-or of the binary representations of x and 5.

You also have to explicitly indicate multiplication. 3x will give you a parse error. You should type 3 * x instead.

I have predefined the constants e and pi. You can also use these math functions:

Continuous, but non-linear:
abs(x), max(x,y), min(x,y)
Rounding and truncating:
ceil(x), floor(x), round(x), sign(x), step(x)
Trig functions:
sin(x), cos(x), tan(x)
Inverse-trig functions:
acos(x), asin(x), atan(x), atan2(y,x)
Logs and exponents:
ln(x), log2(x), log10(x) exp(x) (for ex), pow(x,y) (for xy), sqrt(x)
Hyperbolic trig functions:
sinh(x), cosh(x), tanh(x)

Here is the git repository for this application.