suisse2.py

Created by granier-kloon

Created on April 01, 2025

780 Bytes


# ---------------------------
# SUITES - FICHE DE CLODO
# ---------------------------

# SUITE ARITHMETIQUE

# Un = U0 + n × r
# ou Un = Up + (n - p) × r

# r = raison
# r = Un+1 - Un

# Somme n termes :
# S = (n + 1) × (U0 + Un) ÷ 2



# SUITE GEOMETRIQUE

# Un = U0 × q^n
# ou Un = Up × q^(n - p)

# q = raison
# q = Un+1 ÷ Un

# Somme n termes (q ≠ 1) :
# S = U0 × (1 - q^(n + 1)) ÷ (1 - q)



# DÉMONTRER PAR RÉCURRENCE

# 1) Initialisation → Vérifier P(0) ou P(1)
# 2) Hérédité → Supposer P(n) vraie
#    Montrer que P(n+1) vraie
# 3) Conclusion



# VOCABULAIRE

# Suite arith → + r chaque terme
# Suite géom → × q chaque terme

# q > 1 → géométrique CROISSANTE
# 0 < q < 1 → DÉCROISSANTE

# r > 0 → arithmétique CROISSANTE
# r < 0 → DÉCROISSANTE

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