Mupad is a sophisticated computer algebra system, an alternation for Mathematica and Maple. Mupad can handle not only algebraic calculation like integration, differentiate and matrix manipulation, but also numerical calculations, and draw a beautiful graphs. We can obtain free(!) single-user licenses for non-commercial educational and research use. WWW: http://www.mupad.de/ - NAKATA, Maho E-mail: chat95@mbox.kyoto-inet.or.jp