Enter your data in to columns, separated by a space

Help:

Polynomial coefficients are given in scientific notation
For example f(x) = 1.65e+00 + 5.9e-01 * x + - 1.257e+02 * x^2 = 1.65 + 0.59x - 125.7x²

Click degree arrows to increase or decrease fitted polynomial degree (applet calculates any degree ≥ 1)

Applet automatically scales the axes
Moving your mouse pointer around will trace to tell you what each gridline represents

You can paste data from the system clipboard (e.g. from a spreadsheet) into the upper (input data) window
Edit | Select data from your source, then Edit | Paste

To copy data from the lower (output data) window, click the window, press Edit | Select All, Edit | Copy

Use the Compute tab to enter values for calculation in the polynomial

PolySolve Version 3.3 (12/01/2009) by P. Lutus; www.arachnoid.com