This model maps the logistic equation xn+1 = Axn(1-xn) over a sequence of values of A, starting at 3.4 and incremented by .00003. For each value of A, 500 iterations of x are computed and graphed. Stocks are used to represent A and x. The function STEP(.00003, 500) in the flow Aifier steps the value of A by .00003 every 500 time units. x is iterated by its flow Del_x. The graph displays the 500 iterated values of x for each value of A.
Nova Online: Logistic Chaos (opens in new tab)
Running this model:
1. Click on the “Capture” button in the tool bar.
2. Click “Load” next to “Capture.”
3. Click “Exec” to run the model through multiple iterations. Click “Stop” to stop the graph.
4. To run the model step by step, click “Capture,” “Load,” “Init,” then “Step.”