Square root seems not working. when I press Sqrt button I get the following expression: Sqrt( If I write a number in front of it, I get a malformed expression warning. What am I missing??? -- Antonio ============================================================= Mail by Thunderbird 1.0.7 - Websurfing by Firefox 1.5 ============================================================= Linux Fedora Core 4 on Home Linux user number 362582 http://www.linuxsaronno.net http://www.montagnani.org http://www.campingmonterosa.com Skype: antoniomontag =============================================================