sec(x) Func 1/cos(x) EndFunc Define sec(x)=1/cos(x) 1/cos(x)->sec(x) All three are equivalent. ****************************************************************** * To UNSUBSCRIBE, send an email TO: listserv@lists.ppp.ti.com * with a message (not the subject) that reads SIGNOFF CALC-TI * * Archives at http://peach.ease.lsoft.com/archives/calc-ti.html ******************************************************************