The first two solutions did what I intended. The 3rd one did not, but I may have erred.
Is the use of "_" documented anywhere? Does my difficulty finding it suggest it should be described in either the tutorial or FAQ? I suspect it is commonly used. Thanks everyone for your assistance. On Oct 28, 12:18 pm, Marshall Hampton <[email protected]> wrote: > Slightly different solution to generate and store the values: > > def f(x): > return (1/5)*(x**3+x**2-3) > answers = [f(0)] > for i in range(5): > answers.append(f(answers[-1])) > > ..and then answers will be a list of the first 6 iterated values. > > -Marshall Hampton > > On Oct 28, 8:55 am, Erik <[email protected]> wrote: > > > > > I would like to iterate a function: > > > def f(x): > > return( (1/5)*(x**3+x**2-3) ) > > f(0) > > > Running evaluate on the above yields the quantity -3/5. Rather than > > evaluating f(-3/5), is there a way to reference the previous output > > from evaluate, i.e. to evaluate f(previous) or some similar syntax? > > Similarly, is there a way to use the syntax "for i in range()" to > > define the next i as f(i)? I know that "for i in range(-2,2,i=f(i))" > > does not work. I've briefly searched the tutorial, this Google group, > > and Google generally without finding solutions. However, today is my > > first day using Sage. > > > I'm running Sage 4.1.2 pre-compiled 32 bit binary for Debian Lenny. > > > Thanks. --~--~---------~--~----~------------~-------~--~----~ 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 URL: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
