Dear William, thanks for your quick answer, even though it doesn't make me too happy. I'm having a hard time here, I must admit. So far I thought that sage would do most things out of the box, and it's only inconsistent (eg., arguments to plot, plot3d and integrate vary wildly. There are several functions plot, plot3d, contour_plot, parametric_plot, etc. and not only one that decides on the type of self what to do. limit requires "x=x0" as second argument, and not "x==x0" as would be natural for an equation. The syntax for lambda is completely different to usual function definition - no parens for example. sage just eats all cpu time when I call contour_plot with an equation as self by mistake. In general, it seems that functions are "dangerous", i.e., do little to no type checking, but it's not at all clear when a method does the same thing as the function, and when it is available at all (eg. contour_plot is not a method, while plot is.) A general rule would be extremely helpful here.
Sorry for the rant. "William Stein" <[EMAIL PROTECTED]> writes: > Is this what you want? > > sage: (sin(x)^(1/3)).taylor(x,0,10) > x^(1/3) - x^(7/3)/18 - x^(13/3)/3240 - 53*x^(19/3)/1224720 - > 191*x^(25/3)/62985600 Oh, I didn't realize that taylor does Puiseux. Can I coerce this to an object of PowerSeriesRing, or something similar, so that I can play with it? In other words: is there a Ring of Puiseux series in Sage? More questions: Is there a way to obtain a power series solution to a differential equation? Is there a way to solve an ODE? (ideally, without resorting to maxima or fricas syntax...) Many thanks, Martin --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] 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 -~----------~----~----~----~------~----~------~--~---
