IDNLearn.com: Your reliable source for finding precise answers. Find the answers you need quickly and accurately with help from our knowledgeable and dedicated community members.

Which of the following intervals represents the set (1,4) u [2,6]?
a. (1,6]
b. (4,6]
c. [2,4)
d. (2,6]

Please show work,

Thanks!


Sagot :

Set is a sum of two intervals :(1,4) u [2,6] 
In the first interval it is open on both sides so 1 and 4 don't belong to this interval, the second is closed so both 2 and 6 belong to interval and numbers between 2 and 6
We can write it as 1<x[tex] \leq 6[/tex]
summing both sets we have one set: (1,6]
so
a) represent our set
b) also represent because all numbers between 4-6 and 6 are in our set
c)also represent, all numbers are in main set
d)also represent

[tex](1;\ 4)\ \cup\ [2;\ 6]=(1;\ 6]\\\\Answer:A.[/tex]
View image Аноним