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 Applied calculus utility: function evaluator and grapher (v 3.3)
Use of this system is pretty intuitive. Enter your functions yi(x) in graphing calculator format (press the "example" button to see some examples). Report errors to the Webmaster (link above).
• To compute or graph derivatives, use "deriv()". For instance, deriv(y1) entered for, say, y2 gives the derivative of the function you entered in y1, and deriv(x^3) will give the function 3x^2.
• To trace a curve, click on the curve and use the arrow buttons under the graph to move left and right along the graph.
• NEW in 3.3: Polar curves Just press the "Polar Curve Mode" button and enter ri as a function of theta (you can use either "x" or "theta" for the independent variable).
• To compute values of your functions, specify some values of x (or theta if in polar mode) in the "Evaluator" box (use the Tab key to go from one value to the next), and press "Evaluate".
• To see the graphs of your functions, enter a range of x-values (Xmin and xMax) and press "Graph." (You can use formulas (like "pi" or "sqrt(2)") for Xmin, Xmax, and other fields.)
• To add plotted points, add them in the area provided (press Example to see the format) or just paste in a two-column table from Excel.

Notes: This grapher uses canvas, a feature in Javascript that may not run in some older browsers. If you see no large coordinate plane on the right you will need to use this older version 2.0 until you move to a new standards-compliant browser like the latest Firefox or Safari.

Reports of any errors or issues to the will be greatly appreciated and acted on promptly.
Functions
 y1 = y2 = y3 = y4 = y5 =

 Graph Settings Xmin:     Xmax: Ymin:     Ymax: Auto Auto (Uncheck "Auto" and leave blank for no gridlines.) Points per curve: (Decrease for more speed; increase for pathological curves.)

 Enter Additional Points to Plot Here(or paste from Excel. No commas within numbers please.)
Evaluator
Round answers to significant digits.     Fraction Mode

Grapher last updated: January 16, 2010