How do you find the domain of the function $f(x)=3/(x+2)$ ?

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Answer 1 · 2018-03-30T14:27:14

I tried this:

You need to avoid a division by zero; so you need that the denominator be different from zero, or:

$x+2!=0$

which means, rearranging:

$x!=-2$

Our domain will be all the real $x$ values EXCEPT $x=-2$ .

How do you find the domain of the function f(x)=3/(x+2)f(x)=3/(x+2)?