controle_suite.py

Created by toronico07

Created on March 14, 2022

1.12 KB


Exercice 1 :
  1) U0 = 3 et r = 7
  a) Un = 3 + 7n
  b) U6 = 45 et U25 = 178
  
  2 et 3) V7 - V2 / 7 - 2 = 75 - 30 / 5 = 9
  U0 = 30 - 9 * 2 = 12
  Donc Un = 12 +9n
  
  4) h0 = 2 et q = 1,8
  a) hn + 1 = 1.8 * Un et Un = 2 * 1,8**n
  b) h6 = 68,024 et h25 = 4 817 731,842
  
  5) [Utilise le calcul de raison]
  a) Suite géométrique Un = 22 * 2**n ---> raison = 2
  b) Suite arithmétique Un = 7,5 + 2,5n ---> raison = 2,5
  c) uite arithmétique Un = 60 - 9,7n ---> raison = 9,7
  d) Suite géométrique Un = 1.8 * 3**n ---> raison = 3
  
  
  
Exercice 2 :
  1) C0 = 500 | C1 = 500 * 1,04 = 520 | C2 = 520 * 1.04 = 540,8
  
  2) Cn+1 = Cn * 1,04 donc suite géométrique
  
  3) Cn = C0 * q**n = 500 * 1,04**n | C15 = 900.47
  
  4) Elle double entre l'année 17 et 18 (passe de 500 à 1012,908)
  
  
  
Exercice 3 :
  1) U1 = U0 * 0,75 = 1 * 0,75 = 0,75 | U2 = 0,75 * 0,75 = 0,5625 | U3 = 0,421875

  2) Un + 1 = Un * 0,75 ---> Suite géométrique
  
  3) U0 = 1 et q = 0,75 | Un = 1 * 0.75**n
  
  4) U10 = 1 * 0,75**10 = 0,0563
  
  5) Entre U24 = 0,004003 et U25 = 0,000752 
  
  6) [calcul de S * 2] | Mael : 6,995

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