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Rappels sur les théorèmes de convergence
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Exercice
Maths SM&SP
Analyse
Level 5
1.
D
e
ˊ
terminer la limite de
f
(
x
)
=
x
1
/
x
en
+
∞
.
2.
Soit
x
r
e
ˊ
el.
D
e
ˊ
terminer la limite de
u
n
=
(
1
+
x
n
)
n
.
3.
Limite de
f
et
g
en
+
∞
:
f
(
x
)
=
(
1
+
1
x
2
)
x
et
g
(
x
)
=
(
1
+
1
x
)
x
2
1.\text{ Déterminer la limite de }\\f(x)=x^{1/x}\text{ en }+\infty.\\ \ \\2.\text{ Soit }x\text{ réel.}\\\text{Déterminer la limite de}\\u_{n}=(1+\frac{x}{n})^n.\\ \ \\3.\text{ Limite de }f\text{ et }g\text{ en }+\infty\text{ :}\\f(x)=(1+\large\frac{1}{x^2}\normalsize)^x\\\text{ et }g(x)=(1+\large\frac{1}{x}\normalsize)^{x^2}
1.
D
e
ˊ
terminer la limite de
f
(
x
)
=
x
1/
x
en
+
∞.
2.
Soit
x
r
e
ˊ
el.
D
e
ˊ
terminer la limite de
u
n
=
(
1
+
n
x
)
n
.
3.
Limite de
f
et
g
en
+
∞
:
f
(
x
)
=
(
1
+
x
2
1
)
x
et
g
(
x
)
=
(
1
+
x
1
)
x
2
START THE EXERCICE
WATCH THE SOLUTION
Maths SM&SP
Analyse
Level 1
1
)
lim
x
→
−
∞
x
2
−
2
x
+
3
=
?
2
)
lim
x
→
−
∞
x
4
+
4
x
3
−
2
x
=
?
1)\lim\limits_{x\to -\infty}x^2-2x+3=\text{ ?}\\2)\lim\limits_{x\to -\infty}x^4+4x^3-2x=\text{ ?}
1
)
x
→
−
∞
lim
x
2
−
2
x
+
3
=
?
2
)
x
→
−
∞
lim
x
4
+
4
x
3
−
2
x
=
?
START THE EXERCICE
WATCH THE SOLUTION
Maths SM&SP
Analyse
Level 3
lim
x
→
+
∞
2
x
2
+
1
1
−
x
?
Et en
−
∞
?
\lim\limits_{x\to+\infty}\large\frac{2x^2+1}{1-x}\normalsize\text{ ?}\\ \ \\\text{Et en }-\infty\text{ ?}
x
→
+
∞
lim
1
−
x
2
x
2
+
1
?
Et en
−
∞
?
START THE EXERCICE
WATCH THE SOLUTION
Maths SM&SP
Analyse
Level 4
a
)
lim
x
→
+
∞
x
2
+
1
−
x
b
)
lim
x
→
+
∞
x
2
+
1
x
−
x
a)\lim\limits_{x\to+\infty}\sqrt{x^2+1}-x\\b)\lim\limits_{x\to+\infty}\sqrt{\large\frac{x^2+1}{x}}\normalsize-x
a
)
x
→
+
∞
lim
x
2
+
1
−
x
b
)
x
→
+
∞
lim
x
x
2
+
1
−
x
START THE EXERCICE
WATCH THE SOLUTION
Maths SM&SP
Analyse
Level 3
lim
x
→
−
∞
e
2
x
+
e
x
−
1
e
x
−
3
e
2
x
=
?
\lim\limits_{x\to-\infty}\large\frac{e^{2x}+e^x-1}{e^x-3e^{2x}}\normalsize=\text{ ?}
x
→
−
∞
lim
e
x
−
3
e
2
x
e
2
x
+
e
x
−
1
=
?
START THE EXERCICE
WATCH THE SOLUTION
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