Question

How do you find the domain of `(x-2)/(4-x)`?

Answer 1

The Domain is `RR-{4)`.

Explanation:

We notice that, when `x=4`, (x-4)=0, i.e., the `Dr.` will be `0`, and, since division by `0` is not possible, we must have, `x!=4`

In other words, the Domain is `RR-{4)`.