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Logistic map
MLH
Logistic map equation:
X(n+1) = r*X(n)*(1-X(n))
1 < r < 4.
Nothing fancy - just shows effect of varying r and X0.
The outlet flow = X(n). The inlet flow = X(n+1). So the change in population (delta X) is the difference between them. The effect is to subtract X(n) and add X(n+1) at each time step.