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Online Graphing Calculator
You must have Java scripting enabled in your web browswer for the grapher to work.
The ideal tool for math homework help!

Multiplying

You must place a * between anything you want multiplied. For example you cannot write "3x". You must write "3*x".

Functions supported

sine: sin(x)
cosine: cos(x)
tangent: tan(x)
expential: exp(x), this means e to the power of x.
logarithm: log(x), on this grapher "log(x)" means the natural log (base e), not the common log (base 10). Sorry, it's the way the program was written.
Log base 10 (the common logarithm): To enter the common log, just type "Log(x)/log(10)". this is the change of base formula and will convert log base e to log base 10.

Graphing Functions

Enter the function in the equation editor line, and press the "Draw" button and type in a formula to be graphed in standard mathematical notation (eg "e^(-x/10)sin(x)"). The only variable the formula can use is x. Use Pi for pi; for example, sin(Pi/2 x). You can add as many functions as you like, and "Delete Function" deletes the last one you entered.

Zooming

You can change the scale of your picture quickly with "Zoom In", "Zoom Out" and "Zoom to Box". The first two zoom in or out around the center of the graph. If you click and drag on the graphing window, you can draw out a box, and Zoom To Box will zoom in to make that box fill the whole window.