Investigating the behaviour of a recursively defined sequence
Published on 06 June 2008 at 10:00 pm [Server Time]
Given is the function f(x) = 230.403243784-x2 10-9 ( is the floor-function),
the sequence un is defined by u0 = -1 and un+1 = f(un).
Find un + un+1 for n = 1012.
Give your answer with 9 digits after the decimal point.
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