How can I use Sage to determine if an expression is a sum - i.e. if the last operation performed is either addition or subtraction?
Thus, I would like to identify "a*(b+c)" as a product but "a*b+a*c" as a sum. It would be nice to also identify the number of summands in an addition - or multiplicands in a product - i.e. "a*b+a*c" should be a sum with two summands, as opposed to "a*b+a*c+a*d" having three summands. Thanks! -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
