In an advanced Calculus course, we are dealing with functions with 2 (and more) variables. Is there any 3-D graphing software for Fedora available? Something like Kalgebra, but with a bit more functions such as multiple functions graphed at the same time, asymptote min max and other significant points, zoom into 3-D graph, graph of derivative and integral, etc. Thanks in advance for any suggestions. Dotan Cohen http://what-is-what.com http://gibberish.co.il א-ב-ג-ד-ה-ו-ז-ח-ט-י-ך-כ-ל-ם-מ-ן-נ-ס-ע-ף-פ-ץ-צ-ק-ר-ש-ת A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing?