Team:Evry/LogisticFunctions

From 2013.igem.org

(Difference between revisions)
Line 10: Line 10:
<p>Such functions, named logistic functions were introduced around 1840 by M. Verhulst.</p>
<p>Such functions, named logistic functions were introduced around 1840 by M. Verhulst.</p>
<p><img src="http://upload.wikimedia.org/math/b/e/3/be3fb0b303c46c4d582104ed4ef42636.png"/></p>
<p><img src="http://upload.wikimedia.org/math/b/e/3/be3fb0b303c46c4d582104ed4ef42636.png"/></p>
-
<p>These functions looked perfect, but we needed <b>more control</b> : we needed to set a starting value and a precision. The addition of the parameters d and p allowed us to directly control these crucial informations : f(d)=p. </p>
+
<p>These functions looked perfect, but we needed <b>more control</b> : we needed to set a starting value and a precision. The addition of the parameters d and p allowed us to directly control these crucial informations : g(d)=p. </p>
<p><img src="https://static.igem.org/mediawiki/2013/8/83/FonctionLogistique.png" width="200px"/><img src="https://static.igem.org/mediawiki/2013/0/05/CourbeLogistique.png"/></p>
<p><img src="https://static.igem.org/mediawiki/2013/8/83/FonctionLogistique.png" width="200px"/><img src="https://static.igem.org/mediawiki/2013/0/05/CourbeLogistique.png"/></p>

Revision as of 16:06, 21 August 2013

Iron coli project

Logistic functions :

When we started to model biological behaviors, we realised very soon that we were going to need a function that simulates a non-exponential evolution, that would include a simple speed control and a maximum value.

Such functions, named logistic functions were introduced around 1840 by M. Verhulst.

These functions looked perfect, but we needed more control : we needed to set a starting value and a precision. The addition of the parameters d and p allowed us to directly control these crucial informations : g(d)=p.

References: