From: Rimantas Liubertas Date: 2008-02-28T12:28:00+09:00 Subject: Re: Math problem > >> c = Matrix[[Rational(0)],[Rational(12)]] > => Matrix[[Rational(0, 1)], [Rational(12, 1)]] Copied from the wrong place, these of course should be: >> c = Matrix[[Rational(0)],[Rational(-12)]] => Matrix[[Rational(0, 1)], [Rational(-12, 1)]] Regards, Rimantas -- http://rimantas.com/