How do you find the domain of the function $f(x)=log(x-8)$ ?

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Answer 1 · 2015-04-19T17:07:04

Say that p=x-8

Therefore f(p)=log(p),

Now p must be greater than 0 (p>0).

This means that:

x-8>0,

Therefore:

x>8.

So your answer is x is an element of a real number, however, x must be greater than 8.

How do you find the domain of the function f(x)=log(x-8)f(x)=log(x-8)?