Online Graphing Calculator
You can use this calculator to solve any math problems, especially equation problems. You can plot points, find the intersection, or use it as basic calculator. This calculator is based on flash plugin, so if you need to use this flash graphing calculator, you need to install the flash plugin first.
Just type your equations, whether it is using cos, sin, or tan. This calculator support basic equation functions. You can zoom in, zoom out the graph. If you want to capture the image, just press print screen button and paste it into your graphic editor.