MathGroup Archive 2001

[Date Index] [Thread Index] [Author Index]

Search the Archive

complicated recursion relations

  • To: mathgroup at
  • Subject: [mg26748] complicated recursion relations
  • From: RUDOLPH JOHN MAGYAR <rjmagyar at>
  • Date: Fri, 19 Jan 2001 02:14:23 -0500 (EST)
  • Organization: Amherst College
  • Sender: owner-wri-mathgroup at

I have a set of four functions which are related by a series of recursive formulae.  For example (The real problem is a much messier version of this),


b[n+1]*sin((n+1)/2*pi) -d[n-1]*sin((n-1)/2*pi)
+c[n+1]*sin((n+1)/2*pi) -e[n-1]*sin((n-1)/2*pi)
= d[n]*sin(n/2*pi) - e [n]*sin(n/2*pi)

b[n+1]*sin(3(n+1)/2*pi) -d[n-1]*sin(3(n-1)/2*pi)
+c[n+1]*sin(3(n+1)/2*pi) -e[n-1]*sin(3(n-1)/2*pi)
= d[n]*sin(3n/2*pi) - e [n]*sin(3n/2*pi)

Well, I actually have more terms and a bigger mess, but can I use mathematica to untangle this mess like this?

Rudolph J. Magyar
rjmagyar at
Web Address:

  • Prev by Date: Re: Shortcut for magnitude of a Vector?
  • Next by Date: Stderr:Actions not found:delete-next-character
  • Previous by thread: algorithm for picking sum of list items
  • Next by thread: Stderr:Actions not found:delete-next-character