How do you find the domain of $f (x) = \frac{3}{x - 4}$ $f(x)=3/(x-4)$ ?

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Answer 1 · 2016-05-15T18:33:42

In order for $f (x)$ $f(x)$ to be defined you need the denominator not equal to zero.

Hence $D_{f} = R - {4}$ $D_f=R-{4}$ where $R$ $R$ is the set of real numbers

How do you find the domain of f(x)=3x−4f(x)=3/(x-4)?