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Disequazioni ripasso

Authored by Francesco giovannetti

Mathematics

9th - 12th Grade

Used 7+ times

Disequazioni ripasso
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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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