integrale.py

Created on December 18, 2023

534 Bytes

-integrale sur intervale [a,b]
Sba f(x)dx=[F(x)]ba= F(b) - F(a)
avant d'appliquer cette formule 
il faut calculer la primitive

- valeur moyenne 
u=1/b-aSbaf(x)dx

- integration par partie 
Sba u'v=[uv]ba-Sba uv'
ex: Spie/20xsin(x)dx
1 on fait le choix de ce qu'on attribue
a u et v 
- [uv]ba  calcul au borne 
- Sba uv' faut que l'integrale soit simple
( cad qu'il faut connaitre primitive)
2 u'(x)=sin(x) on reucpere la primitive 
de u' u(x)=-cos(x)
v(x)=x on fait la derive de v 
v'(x)=1
3 on applique la formule

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