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Mathematics 20 Online
OpenStudy (anonymous):

when the domain is all positive numbers do you write that as inf to inf

OpenStudy (kinggeorge):

Yes, as long as all the positive numbers are real.

OpenStudy (kinggeorge):

You probably aren't worrying about that yet though, so you could write that as inf to inf.

OpenStudy (precal):

|dw:1330741681132:dw|

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