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January 31, 2015

January 31, 2015

Posted by **john** on Thursday, February 19, 2009 at 8:45am.

f(x)=log[2](x-9)

- algebra-Needed Quick -
**Reiny**, Thursday, February 19, 2009 at 9:07amby definition, we can only take logs of positive numbers, so

x-9 > 0

x > 9

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