-----maxima-bounces at math.utexas.edu wrote: ----- >(%i15) eq: 1/x=0; >(%o15) 1/x=0 >(%i16) solve(e,x); >`solve' is using arc-trig functions to get a solution.Some solutions >will be lost. >(%o16) [x=-%pi/2,x=%pi/2] Try solve(eq,x) instead of solve(e,x). Barton