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Logistic Map--r=2


LogisticEquation2

With r=2, the logistic map becomes

 x_(n+1)=2x_n(1-x_n).
(1)

The first 20 iterations of this map are illustrated above for initial values a_0=0.4 and 0.92.

The solution can be written in the form

 x_n=1/2{1-f[r^nf^(-1)(1-2x_0)]},
(2)

with

 f(x)=e^x
(3)

and f^(-1)(x)=lnx its inverse function (Wolfram 2002, p. 1098). Explicitly, this then gives the formula

 x_n=1/2{1-exp[2^nln(1-2x_0)]}.
(4)

See also

Logistic Map, Logistic Map--r=-2, Logistic Map--r=4

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References

MathPages. "Closed Forms for the Logistic Map." http://www.mathpages.com/home/kmath188.htm.Wolfram, S. A New Kind of Science. Champaign, IL: Wolfram Media, p. 1098, 2002.

Cite this as:

Weisstein, Eric W. "Logistic Map--r=2." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/LogisticMapR=2.html

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