Precalculus Examples

$f^{- 1} (x) = x^{3} - 9 x^{2} + 27 x - 27$

Step 1

The range is the set of all valid $y$ values. Use the graph to find the range.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${y | y \in ℝ}$

Step 2