How do you find the domain of $log_e(x-9)$ ?

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Answer 1 · 2017-10-01T14:55:06

$x in {RR | x gt 9}$

The logarithm function is only defined for strictly positive real values, thus we require that:

$x - 9 gt 0$

Hence the domain of the given function is:

$x in {RR | x gt 9}$

How do you find the domain of log_e(x-9)log_e(x-9)?