
Disequazioni ripasso
Authored by Francesco giovannetti
Mathematics
9th - 12th Grade
Used 7+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
-x/3+6≥0
x≤18
x≤-18
x≥18
x≥18
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Bisogna risolvere 20-x-5>0. In quale passo c'è un errore?
passo 1: -x>-15
passo 2: x>15
passo 1
passo 2
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Se a e b sono numeri positivi e se a>b allora 1/a<1/b
Sì, sempre
Non necessariamente
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
(x-3)/(x²-1)≥1/(x²-1) implica
x-3≥1
Vero
Falso
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
(x-3)/(x²+1)≥1/(x²+1) implica
x-3≥1
Vero
Falso
6.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
x(x+1)²>0 →
x>0
x>-1
x<-1∪x>0
Nessuno dei precedenti
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Se a e b sono numeri diversi da zero e se a>b allora 1/a<1/b
Sì, sempre
Non sempre
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