How do you find the domain of $f (x) = ln (x - 4)$ $f(x) = ln( x - 4)$ ?

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Answer 1 · 2016-06-08T17:48:46

The argument $x - 4$ $x-4$ must be postive hence $x - 4 > 0 \Rightarrow x > 4$ $x-4>0=>x>4$ the domain is

$D_{f} = (4, + \infty)$ $D_f=(4,+oo)$

How do you find the domain of f(x)=ln(x−4) f(x) = ln( x - 4)?