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D. PINEL, Site Mathemitec : http://mathemitec.free.fr/index.php
+∞ !
" #
$ % & ! % #
$ '
( ) $
→
$& !* $& * "! &"
lim ( )
x af x
→ = ∞ "# #
x y
o x
y
o
$ $ "
$& !* & ! x xsin 1
x "#
! """"
→
! " +∞ # ! " $ %
%lim ( )
x f x a
→+∞ = −∞
+!
2 2
2 1
( ) 19
f x x x
= +
− & * , $ " -
. / "" ! % # "! % % ,
→ !
! " $& +∞ # ! " $ %
%xlim→+∞
(
f x( )−(
ax b+) )=0 −∞
' ! ( 0 " & " 1
) 2 " "
3 2 & "
4 3
→5 & , & #
""& & # $
* +
! & # ""& f x( )−