Question

domain intreveal notation?

Answer 1

For the first one, x can't be equal to -1, if so, we get zero in the denominator, which can't happen

Answer 2

For teh second one, find the values of x so that the quadratic equation in teh denominator is zero. These values (roots) can't be in teh interval

Answer 3

For example, the first one:
\(Dom(f(x)) = \{ x \in R | x \ne -1 \}\)

Answer 4

so you are saying thers no answer to #1?

Answer 5

There are infinite answers for #1 and #2, the first one means that only can't be x = -1

Answer 6

\(x \in R\) means any number in the set of real numbers