On Thu, Aug 28, 2008 at 8:57 AM, Roger <[EMAIL PROTECTED]> wrote: > > solve([x==0, 1-exp(y)==0],x,y) > returns the empty set, although (0,0) is an obvious solution. This > occurs also for other simple combinations involving exp, as well as > for > solve([y*sin(x)==0, cos(x)==0],x,y) > > What am I doing wrong? Thanks. (Sage 3.0.2 on Mac OSX)
Sage uses Maxima's solve command, and Maxima's solve command is pretty wimpy, and we (Sage developers) intend to write our own new solve command that can deal with more general equations. Here's an illustration of maxima not solving the above equations sage: !maxima (%i2) solve([x=0, 1-exp(y)=0],[x,y]); (%o2) [] (%i3) solve([y*sin(x)=0, cos(x)=0],[x,y]); (%o3) [] You can read the help on maxima's solve, if you want to get a sense of its limitations. sage: maxima.solve? William --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
