Primitives Usuelles Flashcards

1
Q

e (cx)

A

1/c ecx

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2
Q

Sin (ax)

A

On a -1/a cos (ax)

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3
Q

Cos ax

A

1/a sin ax

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4
Q

Ch(ax)

A

1/a sh(ax)

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5
Q

Tan x

A

On a - |ln (cosx)|

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6
Q

1/sin^2x

A

On a -1/tan x

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7
Q

1/racine (x^2 - a^2)

A

Ln | x + racine(x^2 -a^2) |

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8
Q

1/ racine(x^2 +a^2)

A

Ln | x + racine(x^2 + a^2) |

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9
Q

1/racine(a^2 - x^2)

A

Arcsin x/a sur ]-a ; a [ seulement

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10
Q

1/(a^2-x^2)

A

1/2a ln | (a+ x) / (a-x) |

Sur R\ |a|

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11
Q

1/a^2 + x^2

A

1/a arctan x/a

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12
Q

Ln x

A

X ln x - x

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13
Q

Sh ax

A

1/a ch (ax)

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14
Q

x^a

A

X^a+1/a+1 +c

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15
Q

1/(racine (x^2+1) pour tout x de R

A

Argsh (x) = ln | x + racine (x^2+1)|

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16
Q

1/racine (x^2-1) pour x de ]1:+8[

A

Argch x = ln | x+racine (x^2-1) |

17
Q

1/(1-x^2) pour x de ]-1;1[

A

Argth x

18
Q

Soit p,q de N, comment calculer une primitive de cos^psin^q ?

A

Si p=1, alors la primitive est la fonction qui a x associe sin^(q+1)/(q+1)
Si p est impair : on peut se ramener au cas 1 grace a cos²+sin²=1
Si q est impair, même idée
Si p et q sont pairs : on linéarise en utilisant la formule de d’Euler, ac binome de newton