
Intervalos de Números Reais e Inequações
Authored by Carla (500)
Mathematics
9th Grade
Used 24+ times

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19 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o menor número inteiro que pertence ao conjunto A = ]-2, 4]?
2
-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considera o conjunto A = ] - π, -1].
Qual das seguintes afirmações é verdadeira?
π ϵ A
-3,14 ϵ A
- π ϵ A
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual dos seguintes intervalos é o conjunto solução da inequação: - x < 1 ?
] -∞, -1 [
] 1, +∞ [
] -1, +∞ [
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sabe-se que A = [ 5, 12 [ ∩ [- 4, 10].
Na forma de intervalo de números reais, o conjunto A é igual a:
[ -4, 10 ]
[ -4, 12 [
[ 5, 10 ]
] 5, 10 [
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considera a seguinte representação gráfica de um intervalo de números reais:
Qual dos conjuntos seguintes define este intervalo?
{ x ∈ IR: x ≥ - 3 ⋀ x < π }
{ x ∈ IR: x < - 3 ∨ x ≥ π }
{ x ∈ IR: x > - 3 ⋀ x ≤ π }
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como representas o conjunto B = { x ∈ R: 2 ≤ x < 6 } na forma de intervalo?
[ 2, 6 [
] 2, 6 ]
] 2, 6 ]
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Na figura estão representados os intervalos
A = ] − ∞, 2 ] e B = ] − 1, 4 ] .
Identifica A ∪ B .
[ − 1, 2 ]
] − ∞, 4]
] − ∞, 4 [
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