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Topic review (newest first)
Hi gAr, Thanks I shall visit the link
As Yoda would say, "That which you need, you already know!"
Supposing you want the gf of the Fibonacci numbers and do not know the recurrence.
The fibonacci numbers 1, 1, 2, 3, 5, 8, 13...
First term to fit is just
next term is
the next is
You can form a 3 x 3 simultaneous set if you take the first 3 values of the sequence as the RHS.
a = 1 , b = -1 , c = - 1
and the gf is