2011/4/17 raman <raman.kurdi2...@gmail.com>:
> Hello Dears
> could you please tell me how I can write the recurrence relation by
> sage?
>
> for example
> p(n)=2p(n-1)+p(n-2) where p(0)=1 and p(1)=3
you could do this:
def p(n):
if n == 0: return 1
if n == 1: return 3
l = (1,3)
for i in xrange(n-1):
l = (l[1],l[0]+2*l[1])
return l[1]
--
To post to this group, send email to sage-support@googlegroups.com
To unsubscribe from this group, send email to
sage-support+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/sage-support
URL: http://www.sagemath.org
