Disequazioni di secondo grado, fratte e sistemi: application

Disequazioni di secondo grado, fratte e sistemi: application

10th Grade

32 Qs

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Disequazioni di secondo grado, fratte e sistemi: application

Disequazioni di secondo grado, fratte e sistemi: application

Assessment

Quiz

Mathematics

10th Grade

Practice Problem

Hard

Created by

DANIELA FALIVENE

Used 39+ times

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32 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

2 mins • 1 pt

-x2-4>0 ha come soluzione

x<-2 v x>2

impossibile

sempre verificata

-2<x<2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

-2x2<0

xR\forall x\in R

impossibile

x<0x<0


x0x\ne0

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

- 10x2 + 5x < 0

0<x<1/2

x<1/2

x<0 ∪ x>1/2

-1/2<x<0

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

3x - x> 0

x<0 U x>3
x<-3 U x>0
-3<x<0
0<x<3

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Quale delle equazioni seguenti ha come soluzione x<-4 ∪ x>6?

x²+2x-24<0
x²+2x-24>0
-x²+2x+24<0
-x²+2x-24>0

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Quale delle seguenti condizioni garantisce che la disequazione 
ax2+bx+c≤0
sia impossibile?

Δ>0 e a>0
Δ>0 e a<0
Δ<0 e a>0
Δ<0 e a<0

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Quale delle seguenti condizioni garantisce che la disequazione 
ax2+bx+c≥0
sia sempre verificata?

Δ>0 e a>0
Δ>0 e a<0
Δ<0 e a>0
Δ<0 e a<0

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