when they ask for the domain or the range, what do [ or ] and ( or ) mean???
2007-04-13 12:34:24 · 4 answers · asked by Ha!! 2 in Science & Mathematics ➔ Mathematics
the [ ] mean that it not only includes the values between the given #'s, but the given #'s themselves, whereas,
the ( ) mean that it only includes the values between the given #'s, not the #'s themselves.
For example: (2, 5) means all the numbers from 2 through 5, for example 2.1, 3.9, 4.9999, but not 2 or 5.
If you want to include 2 or 5, you have to use [ ]
so [2, 5] means it includes #'s such as 2, 2.001, 3, 4.1, 4.999, 5
2007-04-13 12:38:43 · answer #1 · answered by ccguy04 2 · 0⤊ 0⤋
[1,2] is all numbers between 1 and 2 AND the endpoints 1,2
(1,2) is all numebrs between 1 and 2 BUT NOT endpoints
[a,b] is a closed interval
(a,b) is an open interval
[a,b) and (a,b] are semi-open
2007-04-13 19:39:07 · answer #2 · answered by hustolemyname 6 · 0⤊ 0⤋
Interval Notation
[a. b] means does include both inpoints
(- â, â) means does not include the inpoints
- - - - - - -s-
2007-04-13 20:30:20 · answer #3 · answered by SAMUEL D 7 · 0⤊ 0⤋
[ ] means that it includes the end points
( ) means that it does not include the end points
2007-04-13 19:39:19 · answer #4 · answered by bruinfan 7 · 0⤊ 0⤋