Also:
sage: from sympy import *
sage: n = Symbol('n', integer=True)
sage: u = Function('u')
sage: f=u(n+2)-2*u(n+1)-8*u(n)
sage: rsolve(f,u(n),{u(0):2,u(1):7})
(-2)**n/6 + 11*4**n/6Andrzej Chrzeszczyk -- 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
