You also seem to think that by "nonnegative" I implied "positive"; no, I almost said "positive", but remembered that it could be zero also so said that in one word.
Not "could". By definition it is ZERO, not non-negative.
711 posted on 01/30/2005 7:04:40 PM PST by WildTurkey
(When will CBS Retract and Apologize?)