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Algebra 19 Online
OpenStudy (anonymous):

What is the domain of f(x) = log(x) - 1?

OpenStudy (welshfella):

the domain is all the possible values of x what do you know about valid values of log(x)?

OpenStudy (anonymous):

They are bigger than 0?

OpenStudy (welshfella):

yes there is no log of 0 or a negative number

OpenStudy (anonymous):

So it would be x > 0 and not x >= 0?

OpenStudy (welshfella):

right

OpenStudy (welshfella):

or in interval form its (0,+INF) the round bracket means it does not include 0

OpenStudy (welshfella):

the range of f(x) is (-1,+INF)

OpenStudy (anonymous):

Okay ty

OpenStudy (welshfella):

yw

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