Intervalos de números reais

Intervalos de números reais

9th Grade

18 Qs

quiz-placeholder

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Intervalos de números reais

Intervalos de números reais

Assessment

Quiz

Mathematics

9th Grade

Medium

Created by

Salomé Pedro

Used 102+ times

FREE Resource

18 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

 Como representas  A={xR: x>5} \ A=\left\{x\in R:\ x>5\right\}\   na forma de intervalo?

]- \infty  , 5[

]- \infty  , 5]

[5,+ \infty  [

]5,+ \infty  [

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Como representas  B={xR: 2x<6} \ B=\left\{x\in R:\ 2\le x<6\right\}\   
  na forma de intervalo?

[2,6[

[2,6]

]2,6[

]2,6]

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O número 6 pertence a qual intervalo?

]- \infty , 6[

]- \infty , 6]

]2,3]

]8,9]

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O intervalo ]2,4[ está contido em qual intervalo?

]-2,1[

]0,3[

]0,2[

]1,5[

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Como é que se representa o intervalo [4, +  \infty  [ em compreensão?

 {xR: x>4}\left\{x\in R:\ x>4\right\}  

 {xR: x4}\left\{x\in R:\ x\ge4\right\}  

 {xR: x<4}\left\{x\in R:\ x<4\right\}  

 {xR: x4}\left\{x\in R:\ x\le4\right\}  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

O intervalo ]4,8] é:

fechado em 4 e em 8

fechado em 4 e aberto em 8

aberto em 4 e aberto em 8

aberto em 4 e fechado em 8

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Como representas C={ xR: x3x\in R:\ x\le-3  } na forma de intervalo?

]-3, + \infty  [

]- \infty  ,-3[

]- \infty  ,-3]

[-3, + \infty  [

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