chap6_limitesdefonction.py

Created by comecp

Created on February 28, 2024

1.01 KB


QUAND X TEND VERS +INF:
lim x^2 = +inf
lim x^3 = +inf
lim x^n = +inf
lim x = +inf
lim 1/x = 0
lim e^x = +inf

QUAND X TEND VERS -INF:
lim x^2 = +inf
lim x^3 = -inf
lim x^n = +inf pour n pair
lim x^n = -inf pour n impair
lim 1/x = 0
lim e^x = 0

OPERATIONS SUR LES LIMITES:
  Somme:
    L+L'=L+L'
    L+inf=+inf
    L-inf=-inf
    +inf+inf=+inf
    -inf-inf=-inf
  Produit:
    L x L'=L x L'
    Linf=inf
    inf inf=inf
  Quotient
    L/L'=L/L'
    L/0=inf
    L/inf=0
    inf/L=inf

FORMES INDETERMINEES:
  inf-inf 0xinf inf/inf 0/0

LIM FONCTION COMPOSE:
  Soit la fonction f definie sur ]1/2;+inf[
  par f(x)=2-1/2
  Calcul de lim en +inf
  On a: lim1/x=0 x tend vers +inf
  donc lim 2-1/x=2 "
  Donc lim de √2-1/2=√2 x tend vers +inf
  --------------------------------
  LIMITES EXPONENTIELLE:
    lim e^x=+inf x tend vers +inf
    lim e^x=0 x tend vers -inf
    lim e^x/x=+inf tend vers +inf
    lim xe^x=0 tend vers -inf 
    lim x^ne^x=0 x tend vers -inf
    lim e^x/x^n=+inf c tend vers +inf

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