Week 4: Rational Functions – Day 2

Range

The range is the set of all values taken by the function. State the range of the following rational functions, in interval notation.

1. f(x) = 1/(x – 1)

2. f(x) = 3

3. f(x) = 3/(x2 + 1)

4. f(x) = 1/x2

5. f(x) = (x3 + 1)/x

Answers