Question

When is `2/(x-1)` defined?

Answer 1

`(2/(x-1))` is defined at every point except when `x=1`

Explanation:

Anytime the denominator is `0`, the graph is undefined

The only time it is not defined is when `x=1`

Answer 2

I tried this:

Explanation:

It is defined for all the Real `x` except for `x=1` because in this case the denominator becomes zero and we cannot find a Real number solution of `2/0`.