
Révisions 2
Authored by Elisa Play
Mathematics
12th Grade
Used 1+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On considère pour tout n appartenant à N la suite (Un) telle que U(0)=3 et U(n+1)=2Un + 1. Alors...
(Un) est géométrique
(Un) est arithmétique
(Un) est décroissante
Aucune bonne réception
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
De même on considère la suite (Vn) telle que V(0)=1 et V(n+1)-V(n)=(1/2)V(n). Alors ...
(Un ) est croissante
(Un) est arithmétique
V(10) = 234/32
Aucune bonne réponse
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Soit (Yn) une suite croissante telle que Y(n)<43. Alors cette suite est minorée ?
Vrai
Faux
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On dit que la suite (Un) est majorée lorsqu’il existe un nombre réel M tel que, pour tout entier naturel n, Un ≤ M. On dit que M est
Un minorant de la suite (Un)
Une majorité de la suite (Un)
Un majorant de la suite (Un)
Aucune bonne réponse
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
On dit que la suite (Un) est bornée lorsqu’elle est
majorée et continue
Majorée et minorée
Majorité et incontinue
Aucune bonne réponse
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une suite (un) est dite croissante si pour tout entier
Un+1 = Un
Un + 1 ≤ Un
Un + 1 ≥ Un
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
(Un) est une suite de premier terme (U0) = 5 et de raison r=2. Exprimer Un en fonction de n.
Un = 5 - 2n
Un = 2n
Un = 5 + 2n
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