we have solve(x^2+2*x+1=0); [x=-1] but, I don't know how to solve(x^2+2*x+1>0); Cannot solve inequalities. -`solve' -- an error. To debug this try debugmode(true); -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.math.utexas.edu/pipermail/maxima/attachments/20091011/7c0b58d3/attachment.htm