GraphNow Software provides math graphing softwares for school, college and university teachers and students. Just visit http://www.graphnow.com.
Thanks for the short advertising, graphnow, I will take a look at your product.
John, you could provide some more information about yourself on the website ... it looks very "impersonal".
But the screenshots and descriptions look good.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
Dear MathsIsFun, thanks for your suggestion!
Did you know that the cartesian plane is named after Rene` Descartes?
Did you know what linear equations, quadratic equations and cubic, quartic and quintic equations are?
I haven't yet visited the website, I reserve my comments.
Character is who you are when no one is looking.