[SLI_009]Set Notation question

A-R-Q · **Joined:** Sat, 20 Nov 2010 21:17:02 UTC **Posts:** 432

If you wanted to write the domain is x ≥ 1 but x ≠ 0, how would we do so in Set Notation?

aswoods · **Posted:** Sat, 20 Aug 2011 12:35:13 UTC

The first condition implies the second. Did you mean x≤1?

$\\\{x\in\mathbb{R}\;|\;x\ge 1\}\\\{x\in\mathbb{R}\;|\;x\le 1;\;x\neq 0\}=\{x\in\mathbb{R}\;|\;0\neq x\le 1\}=\{x\in\mathbb{R}\;|\;x\le 1\}\backslash\{0\}$

A-R-Q · **Joined:** Sat, 20 Nov 2010 21:17:02 UTC **Posts:** 432

What does the "\" denote?

aswoods · **Posted:** Sat, 20 Aug 2011 16:14:40 UTC

Without.

{1,2,3,4,5}\{3,4} = {1,2,5}.

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[SLI_009]Set Notation question

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