a > 0 und xo > 0 are the start values (+) 1 a Xn + 2 Xn+1 Xn |(xn)neN is the sequence with without proof you can assume: 5:= lim xn. S this sign i'll just call z a) show that z is greater or equals 0 b)Show that z^2 equal a, and conclude that z= root of a Use this lim xn = lim xn+1 but you can assume that z is greater than 0

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