What is the domain in interval notation for f(x ) = \frac { x - 1} { x - 3} ?

1 Answer
Oct 21, 2017

(-oo, 3)U (3,oo)

Explanation:

The given function is defined for all real values of x, except x=3, which makes it undefined. Hence the domain of f(x) is all real numbers excluding x=3.

In the interval notation the would be written as (-oo, 3)U (3,oo)