- #1
sunrah
- 199
- 22
Homework Statement
Given the following recursion formula:
[itex]b_{j} = 2 \frac{kj - a}{j(j+1)-l(l+1)} \cdot b_{j-1}[/itex]
(where a, k and l are constants) how can
[itex]b_{j = l} \neq 0[/itex] if [itex]b_{j - 1} = 0[/itex].
Homework Equations
The Attempt at a Solution
This is a part question and I really can't see why. if bl-1 = 0 then bl = 0 also. But then all subsequent bj as well !