sui.py

Created by thomas-vignal01

Created on November 16, 2022

699 Bytes

arith : 
un+1 = un + r


terme general d'une suite
un=u0+ n*r
ou
un = u1+(n-1)*r
     u1+(rangcherché-1)*r
un remplacé le terme souhaité

up = un + (p-n)*r

montrer suite arith = 

un+1 - un = r 
positif = croissante et inverse

calculer somme suite ari
(nbr terme(1er terme+dernier terme))/2

calculer dernier et 1er terme
et compter le u0 aussi

((u1+un)/n)*n

u1 = valeur u1
un = valeur dernier terme
n = rang dernie terme

géo 

un+1 = un * q

terme général suite géo
aussi un en fonction de n 
un=u0*q puissance n (rangvoulu)
ou
un= u1 * q puissance n-1


up = un * q**p-n

calculer somme suite géo

= 1er terme * (1-q puissance nbr de terme)/1-q

sn = (u1 * (1-q**n))/ 1-q

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