If i define a function say y1=x^2 i graphs fine. if I write y1(5) in the commandline shouldn't it display 25? It displays 1.953125 ..... -- Amigaentusiast & C-programmer from Falkenberg,Sweden A4000/040/25Mhz/18/420/CD-ROM/USR V.34/CyberVision 3D http://home1.swipnet.se/~w-16779/