Javascript Function Evaluator

Applied calculus utility: function evaluator and grapher (v 3.1)

NEW in 3.1 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 compute values of your functions, specify some values of x 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 include plotted points, add them in the area provided (press Example to see the format) or just paste in a two-column table from Excel.
Note: This grapher uses excanvas, a new feature in Javascript, and it may not run in some older browsers. If you see no large coordinate plane on the right, your browser does not understand excanvas, and so you will need to use this older version 2.0 until you move to a new standards-compliant browser like the latest Firefox.

Functions

Graph Settings

Xmin: Xmax:

Ymin: Ymax: Auto
X-Gridlines every: units
Y-Gridlines every: units 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.)