Intervalos. Inequações.

Intervalos. Inequações.

9th Grade

18 Qs

quiz-placeholder

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Intervalos. Inequações.

Intervalos. Inequações.

Assessment

Quiz

Mathematics

9th Grade

Practice Problem

Hard

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18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A inequação  2x6-2x\ge6 é equivalente a:

 x3x\le-3  

 x3x\ge-3  

 x8x\ge8  

 2x62x\ge-6  

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

O conjunto solução da condição
 x1    x3x\ge-1\ \ \wedge\ \ x\le3 
pode ser obtido fazendo:


] ,3-\infty,3  \cap  [ 1,+-1,+\infty [

] ,3-\infty,3  \cup  [ -1,+\infty [

] ,1-\infty,-1  \cap  [ 3,+3,+\infty [

] -\infty,-1  \cup  [ 3,+3,+\infty [

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

O intervalo  \left[-2,2\right] contém um número finito de elementos.

VERDADEIRO

FALSO

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Qual é o conjunto solução da condição x>3    x0x>-3\ \ \vee\ \ x\le0 ?


] ,+-\infty,+\infty [  

] 3,0-3,0 ]

] ,0-\infty,0 ]   

[ 3,+-3,+\infty 

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A condição x>2  x<5x>-2\ \wedge\ x<5  é equivalente a

 2<x<5-2<x<5 

Verdadeiro

Falso

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

Qual é a condição associada a esta representação?

 x1    x>2x\le1\ \ \wedge\ \ x>2  

 x1    x>2x\le1\ \ \vee\ \ x>2 

 x1    x<2x\ge1\ \ \vee\ \ x<2  

 x1    x<2x\ge1\ \ \wedge\ \ x<2  

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Qual é o conjunto solução da condição 2x>5    x+102x>5\ \ \wedge\ \ x+1\ge0 ?


 {}\left\{\right\}  

[ 1,+-1,+\infty [

] 52,+\frac{5}{2},+\infty 

[ 1,52-1,\frac{5}{2} 

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