I had a look at NestList in Mathematica and there is nothing out of the box to compute [x, f(x), f(f(x)), f(f(f(x))), ...] in Python. But still you can do the following one line program
sage: f(x) = 3.9*x*(1-x) sage: orbit = [0.3] sage: for _ in range(10): orbit.append(f(orbit[-1])) sage: print orbit [0.300000000000000, 0.819000000000000, 0.578132100000000, 0.951191962303401, 0.181060671295945, 0.578283047962646, 0.951099881166544, 0.181384699124966, 0.579088731188415, 0.950605393136126, 0.183123640738886] Vincent 2014-09-18 6:58 UTC+02:00, s m h <[email protected]>: > Thank you so much, I do consider your suggestions. > Sorry for inconvenience... > > > > در پنجشنبه 18 سپتامبر 2014، ساعت 1:31:37 (UTC+4:30)، vdelecroix نوشته: >> >> The sage-devel list is intended for development and not for questions >> related to Sage usage. For that purpose there are: >> - the website ask.sagemath.org >> - the googlegroups sage-support (to whom I transfered this e-mail) >> Please use them for your future usage. >> >> You might have a look at >> >> http://ask.sagemath.org/question/10013/solving-an-ode-system-with-initial-conditions/ >> >> >> But anyway it always better to describe better what you want to do. >> >> Vincent >> >> 2014-09-17 19:59 UTC+02:00, s m h <[email protected] <javascript:>>: >> > >> > Dear Sage-devel >> > >> > I want to know how I should introduce the system of equations and the >> > corresponding vector of initial values to Sage a priori to solve them >> with >> > some functions like sage.calculus.desolvers.desolve_odeint or >> > sage.calculus.desolvers.desolve_system >> > . >> > >> > If it helps, I want to translate my Mathematica code (for solving an ODE >> > >> > system) to a Sage code, and for now I'm looking for something like >> > NestList[] in Mathematica. >> > >> > Yours truly, >> > > -- > You received this message because you are subscribed to the Google Groups > "sage-devel" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
