Given x0 and y0 such that x0 > y0 > 0. Define, for n = 0,1,2,,(adsbygoogle = window.adsbygoogle || []).push({});

xn+1 =xn +yn , yn+1 = 2xnyn .Find the limits of {xn} and {yn}.

why is the answer lim{xn} = lim{yn} = sqrt(x0y0)?

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# The invariance principle

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