On Saturday, October 27, 2012 8:52:36 PM UTC+2, Robert Dodier wrote: > > On 2012-10-26, Jan <[email protected] <javascript:>> wrote: > > > I have a similar problem I can't solve > > d==b*sqrt(d)+c > > for d. All suggestions (to_poly_solve, use_grobner) did not work. > > For the record, here's what I get with Maxima 5.28.0. I think > to_poly_solve has been updated in the not so distant past so maybe Sage > is using an older version? > > (%i2) load (to_poly_solve); > > (%i3) to_poly_solve (d = b * sqrt(d) + c, d); > (%o3) %union(%if(?%and(-%pi/2 < parg(b-sqrt(4*c+b^2)), > parg(b-sqrt(4*c+b^2)) <= %pi/2), > [d = -(b*sqrt(4*c+b^2)-2*c-b^2)/2],%union()), > %if(?%and(-%pi/2 < parg(sqrt(4*c+b^2)+b), > parg(sqrt(4*c+b^2)+b) <= %pi/2), > [d = (b*sqrt(4*c+b^2)+2*c+b^2)/2],%union())) > > > I didn't check the result; sorry about that. > > best > > Robert Dodier > > Thanks, this output is what I expected. So it seems to be the version of Maxima.
best Jan -- You received this message because you are subscribed to the Google Groups "sage-support" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support?hl=en.
