Logistic regression (Verhulst's logic equation)

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I need to build 2 graphics:

  1. using logistic regression model
  2. using the same model but with Allee effect

I tried using this formula in WolframAlpha but it doesn't show any diagram, and looks like I do something wrong.

So I have 2 questions:

  1. How should I write the logistic regression equation including Allee effect?
  2. How should I write these formulas in WolframAlfa so that I can see the diagram?
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Chris Degnen On

Re. your expression

enter image description here

You could plot the following for various values of r, k and p0

(E^(r t) k p0)/(k - p0 + E^(r t) p0)

Obtained from

enter image description here

With reference to https://mathworld.wolfram.com/LogisticEquation.html