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17795
25.06.2021 •
Mathematics
¿En cuál de los siguientes intervalos están solo los números reales que pertenecen a ] –3 , 5 ] y no pertenecen a [ –1 , 7 [?
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Ответ:
Complete question:
¿En cuál de los siguientes intervalos están solo los números reales que pertenecen a ]- 3,5 ] y no pertenecen a [ –1 , 7 [ ?
A) ]-3, -1[
B) ]- 3, -1 ]
C) [-1,5]
D) ]- 3,7[
E) [5,7[
A) ]-3, -1[
Step-by-step explanation:
El intervalo ]- 3,5 ] incluye a todos los números que se encuentran entre -3 y 5. Es decir,
...-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6...
El intervalo [–1 , 7[ excluye a los números que se encuentran entre -1 y 7, pero incluye a todos los números que sean menores a -1 y a todos los mayores a 7. Es decir,
...-7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12 13...
Para responder el problema, debemos encontrar aquellos números reales que se incluyan dentro de ambos intervalos. Esto es,
]- 3,5 ] ...-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10...
]- ∞ , -1[ ∪ [7,∞[...-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10...
Es decir que el intervalo ]-3, -1[, corresponde a la intersección entre ambos conjuntos.
Ответ:
Step-by-step explanation:
what i do is i go on what the end number should be which mean then i go though and figure out what number to use to get the end number now if there is no end number just use Xeveryone uses X
inside joke: ( i mean math need to stop having us find his x, dude i mean come on we all know they dont come back)