Hi Julien, > I am just wondering what these mean: %t1 %t2 %tn? > What does "t" stand for? The %tn label represents a intermediate expression. See: http://maxima.sourceforge.net/docs/manual/en/maxima_4.html#Item_003a-labels Bye, -- Juan Pablo Romero Bernal Blog: http://jpromerobx.blogspot.com/