
Suites arithmétiques - 1ere PRO
Authored by Bruno Vincentelli
Mathematics
11th Grade
Used 3+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la formule pour calculer le terme de rang n d'une suite arithmétique en fonction du premier terme et de la raison r ?
un = u1 + (n - 1) x r
un = u1 + n x r
un = u1 x r + n
un = u1 - r x n
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la raison de la suite arithmétique définie par les termes 50, 46, 42, 38 et 34 ?
-2
-4
4
2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la valeur de u15 dans la suite arithmétique avec u1 = 4 et r = 3 ?
46
52
43
49
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la somme des 12 premiers termes de la suite arithmétique avec u1 = 0.5 et r = 2 ?
144
138
150
132
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est l'expression de un en fonction de n pour la suite arithmétique définie par u1 = 500 et un+1 = un - 50 ?
un = 500 - 50n
un = 500 - 50(n-1)
un = 500 - 50(n+1)
un = 500 - 50n + 50
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le sens de variation de la suite arithmétique avec u1 = 10 et r = 4 ?
Croissante
Décroissante
Constante
Aléatoire
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle est la valeur de u4 dans la suite arithmétique avec u1 = 10 et r = 4 ?
18
14
16
22
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