Equation Grapher & Regression

Equation Grapher is a tool for plotting and analyzing functions. It lets you draw graphs like y=2x and y=sin(x+10)-cos(3x). You can plot up to 12 graphs in different colors at the same time. Once you have plotted a function, Equation Grapher automatically finds roots, maximum/minimum, intersections, etc., and can also calculate and view integration area. Equation Grapher also features several zoom functions, a background grid, the ability to change the text of the x- and y-axis, file saving (function file or BMP/GIF), the ability to print graphs directly or copy them to the Clipboard (to paste them into your word processor), andmore. Angles can be in either degrees or radians. Besides trigonometry functions, random numbers and logarithms, Equation Grapher also has the d/dx derivative function. Constants like pi and e are included as well. A pedagogical help file / tutorial teaches you how to use the program.