(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I don't really know how to ask this, so I'll get straight into an example.

x:x[tex]\in[/tex](-[tex]\infty[/tex],[tex]\infty[/tex]) but x[tex]\neq[/tex]1

x:x[tex]\in[/tex](-[tex]\infty[/tex],1)[tex]\cup[/tex](1,[tex]\infty[/tex])

what is the difference between these two intervals?

2. Relevant equations

3. The attempt at a solution

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Domain and range

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