exponentielle.py

Created on April 04, 2022

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La fonction definir sur R par f(x)=Apuissancex
est appele fonction exponentielle de 
base A

Si 0<A<1 alors f est decroissante sur R
Si A>1 alors f est croissante sur R

A faire dans EX :
  f est une fonction exponentielle
de base ...

Si f=0,8x alors 0<0,8<1 donc f est
decroissante sur R
Si f=3x0,8x alors g(x)=3xF et 3>0 donc
f et g ont mes memes variations donc
g est decroissante sur R
Si h(x)=-5x0,8x alors h(x)=-5xf et -5<0
donc f et h ont des variations contraires
donc h est croissante sur R

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