"chris" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > I have a recursive function b(k) > > b(k) = -(A/k**2)*(b(k-2) - b(k-5))
This is specifically called a recurrence relation/ [snip] > When this is expanded I get a polynomial F(A). I want to determine the > coefficients of the polynomial so that I can find the roots of the > function > F up to a specified order of A. This is a math/numerical analysis problem. If you don't get an answer here, I'd look for a text of recurrence relations and polynomials, and look for a math/numerical analysis newsgroup. sci.mathematics? Note: your subject line is so vague that a specialist who can tell you more could but only selectively opens threads could easily miss this. It is only happenstance that I didn't. Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list