Question

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

Answer 1

I tried this:

Explanation:

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`.