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Re: Domain of a function


Select the | and press F1. This will lead you to Help for Alternatives

http://reference.wolfram.com/mathematica/ref/Alternatives.html


Bob Hanlon

On Sun, Nov 27, 2011 at 4:14 AM, Tutor <alfred.muehlleitner at gmx.at> wrote:
> Element[x | Sqrt[2 + x], Reals]; what exactly does "|" in this case?
>



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