Chap5 : La fonction exponentielle Flashcards

1
Q

Pour la fonction exp,
∀ x ∈ ℝ, f’(x) = ? (1)
f(0) = ? (2)

A

(1) f’(x) = f(x)
(2) f(0) = 1

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2
Q

∀ a ∈ ℝ, quelle est le signe de exp(a) ?

A

exp(a) > 0

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3
Q

∀ a ∈ ℝ, ∀ b ∈ ℝ, exp(a+b) = ?

A

exp(a) * exp(b)

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4
Q

∀ a ∈ ℝ, exp(-a) = ?

A

1/exp(a)

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5
Q

∀ a ∈ ℝ, ∀ b ∈ ℝ, exp(a-b) = ?

A

exp(a)/exp(b)

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6
Q

∀ a ∈ ℝ, ∀ n ∈ ℤ, exp(n*a) = ?

A

[exp(a)]ⁿ

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7
Q

exp(1) ≃ ? (à 0,001 près)

A

exp(1) ≃ 2,718

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8
Q

lim exp(x)/x = ?
x -> +∞

A

+∞

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9
Q

lim (x*exp(x)) = ?
x -> -∞

A

0

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10
Q

(exp(u))’ = ?

A

u’*exp(u)

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