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OpenStudy (anonymous):
Find the domain of the logarithmic function. f(x) = log9 (x + 4)
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OpenStudy (mertsj):
Well we know that 9 is the base and 9 raised to any power will be a positive number so the argument cannot be negative.
OpenStudy (mertsj):
In other words, x+4>0 x>-4
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