Graph.tk is easy and fast to use.

- Visit http://graph.tk
- Click the button to add a new function
- Type the equation using * for multiplication, / for division and ^ for exponentiation. To type special characters use "\name". For example, "\sqrt" yields √ and \pi produces a π.

This is what gives graph.tk the power to find derivatives, integrals, inverse functions, and solutions quickly and reliably.

Runs straight from within the browser using the new HTML5 features.

But it can still save all the graphs, and it still works when you're not even connected to the net!

You will just need to have either Google Chrome, Firefox, Safari, or Internet Explorer 9.

The graph on the left was generated using the graph.tk API.

If you're an elite hacker pro javascript coder genius, then we need your help. It would be great if you could help build this utility.

CreditsLet us know what's wrong. There are many bugs and usability flaws and we need to know about all of them. Your feedback is well appreciated.

Email: graph.tk [at] gmail.com

Twitter: @graph_tk