quick question about sets in math

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quick question about sets in math

Postby Slater » Mon Aug 29, 2005 8:21 pm

confirm me on this if I'm right.

L = {2, 8} means that set L contains the numbers 2 and 8.

M = [3, 11] means that set M contains all numbers greater than and equal to 3 and less than or equal to 11.

N = (1, 5) means that the set N contains all numbers greater than 1 and less than 5


is this correct?
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Postby termyt » Tue Aug 30, 2005 8:27 am

You are correct.

The braces {} are used to define a set of numbers.

Square brackets [] are used to notate close sequences.

Parentheses () are used to notate open sequences.

You can mix and match the square brackets and parentheses as well. [2,11) is the range of numbers between 2 and 11 - including 2, but not including 11.
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Postby Slater » Tue Aug 30, 2005 10:12 am

thank you vey much!
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Postby termyt » Wed Aug 31, 2005 5:08 am

You're welcome. Glad to be of service.
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