Dominique THANK YOU! Without or without declaring x your way works!!!!
This... var("y C") solve( log(y) == C + log(x) + log(y-1),x) solve( x == y/(y*e^C - e^C), y) Gives... [y == x*e^C/(x*e^C - 1)] What is amazing is that simply having y appear in 2 places makes it unsolvable directly without solving for x first. What if my equation did not have the option of solving for x first? Is it normal for "simple" nonlinear equations to be unsolvable systematically? I wouldn't be surprised if it wasn't Sage's fault and there simply isn't a foolproof systematic way to solve log equations but not sure. cs -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.