a<x<b |
all real numbers between a and b, not including a and b |
(a,b) |
x>a |
All real numbers greater than a, but not including a |
(a,∞) |
x<b |
All real numbers less than b, but not including b |
(−∞,b) |
x≥a |
All real numbers greater than a, including a |
[a,∞) |
x≤b |
All real numbers less than b, including b |
(−∞,b] |
a≤x<b |
All real numbers between a and b, including a |
[a,b) |
a<x≤b |
All real numbers between a and b, including b |
(a,b] |
a≤x≤b |
All real numbers between a and b, including a and b |
[a,b] |
x<a or x>b |
All real numbers less than a or greater than b |
(−∞,a)∪(b,∞) |
All real numbers |
All real numbers |
(−∞,∞) |