Fonction exponentielle Flashcards

1
Q

fonction exponentielle: il existe une unique fonction telle que :

A
f' = f et f(0) = 1
(exp(x))' = exp(x) et exp(0) = 1
(e^x)' = e^x et e^0= 1
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2
Q

e=

A

e^1 = 2,718…

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3
Q

pour tout x

A

e^x > 0

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4
Q

fonction exp

A

strictement croissante sur R

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5
Q

e^x=

A

1/e^x

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6
Q

e^(x+y)=

A

e^x * e^y

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7
Q

e^(x-y)=

A

e^x/e^y

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8
Q

(e^x)^n=

A

e^(n*x)

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9
Q

lim e^x = quand x–>+∞

A

+∞

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10
Q

lim e^x = quand x–> -∞

A

0

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11
Q

e^a=e^b

A

a=b

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12
Q

e^a

A

a<b></b>

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13
Q

e^a>e^b

A

a>b

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14
Q

lim e^x/x quand x–> +∞

A

+∞

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15
Q

lim xe^x quand x–> -∞

A

0

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16
Q

lim e^x/x^n quand x–> +∞

A

+∞

17
Q

lim x^n*e^x quand x–> -∞

A

0

18
Q

lim (e^x-1)/x quand x–> 0

A

1

19
Q

e^u(x)

A

> 0

20
Q

(e^u(x))’

A

u’(x)*e^u(x)