Question

intervals of subset​

Answer 1

Answer:

Intervals: An interval is a subset I of R∗ satisfying the following requirement: Whenever x < y < z and x,z ∈ I then y ∈ I. Obvious examples are the sets we have been taught to consider intervals: (a,b) = {x : a < x < b}, [a,b] = {x : a ≤ x ≤ b}, (a,b] = {x : a < x ≤ b}, [a,b) = {x : a ≤ x < b}.

Answer 2

Answer:

Intervals: An interval is a subset I of R∗ satisfying the following requirement: Whenever x < y < z and x,z ∈ I then y ∈ I. Obvious examples are the sets we have been taught to consider intervals: (a,b) = {x : a < x < b}, [a,b] = {x : a ≤ x ≤ b}, (a,b] = {x : a < x ≤ b}, [a,b) = {x : a ≤ x < b}.

HOPE IT WILL HELP U