Hi! On 12/12/2012 05:27 PM, David Narvaez wrote: > Is there a ready-to-use method to isolate a variable in an expression? > At least for first and second degree polynomials in at most two > variables. I don't know what you mean by "isolate". Maybe the the collect and coeff methods are what you are looking for. -richy. -- Richard B. Kreckel