On Fri, Apr 8, 2011 at 10:57 AM, Michael <mxue at vroomlab.com> wrote: > > Doug: > > you need to put a quote in front of diff(y,x). > > Maxima will give you an implicit solution: > > (y*log(y)-x)/y = %c > > -michael > > > > > Thanks Michael - yes I know that now :-) , all is well!