Disequazioni con modulo e irrazionali

Disequazioni con modulo e irrazionali

10th Grade

16 Qs

quiz-placeholder

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Disequazioni con modulo e irrazionali

Disequazioni con modulo e irrazionali

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Medium

Created by

Elisabetta Corsini

Used 28+ times

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16 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 x+1+3>0\left|x+1\right|+3>0  È verificata

Sempre

Mai

Nel intervallo (0;1)

Per x>0

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 xx+20\frac{\left|x\right|}{\left|x\right|+2}\le0  La disequazione ha soluzione

Sempre verificata 

Mai verificata 

Mai verificata tranne per x=0

Per x0x\ne0  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 xx<0\frac{\left|x\right|}{-x}<0   la disequazione è:

sempre verificata

verificata da  (0;+)\left(0;+\infty\right)  

verificata  da  (;0)\left(-\infty;0\right)  

verificata da  x=0x=0  

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 x<xx<\left|x\right|   la disequazione è:

sempre verificata

verificata da  (0;+)\left(0;+\infty\right)  

verificata  da  (;0)\left(-\infty;0\right)  

mai verificata

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 xx>0-x\left|-x\right|>0   la disequazione è:

sempre verificata

verificata da  (0;+)\left(0;+\infty\right)  

verificata  da  (;0)\left(-\infty;0\right)  

mai verificata

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

 x<x+9\left|x\right|<-\left|x+9\right| 


la soluzione è

 x=1x=1  

(;+)\left(-\infty;+\infty\right)

(;1)(1;+)\left(-\infty;-1\right)\cup\left(1;+\infty\right)

impossibile

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

 x2+3x+10\frac{x^2+3}{\left|x\right|+1}\ge0  

sempre verificata

impossibile

 (;0)\left(-\infty;0\right)  

 x0x\ge0  

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