With  ,
 the logistic map becomes
,
 the logistic map becomes
|  | 
(1)
 | 
 
The first 20 iterations of this map are illustrated above for initial values  and 0.92.
 and 0.92.
The solution can be written in the form
| ![x_n=1/2{1-f[r^nf^(-1)(1-2x_0)]},](/images/equations/LogisticMapR=2/NumberedEquation2.svg) | 
(2)
 | 
 
with
|  | 
(3)
 | 
 
and  its inverse function (Wolfram 2002, p. 1098). Explicitly,
 this then gives the formula
 its inverse function (Wolfram 2002, p. 1098). Explicitly,
 this then gives the formula
| ![x_n=1/2{1-exp[2^nln(1-2x_0)]}.](/images/equations/LogisticMapR=2/NumberedEquation4.svg) | 
(4)
 | 
 
 
See also
Logistic Map, 
Logistic
Map--r=-2, 
Logistic Map--r=4
Explore with Wolfram|Alpha
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.Referenced on Wolfram|Alpha
Logistic Map--r=2
Cite this as:
Weisstein, Eric W. "Logistic Map--r=2."
From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/LogisticMapR=2.html
Subject classifications