Precalculus Examples

$y = x^{4} - 4 x^{3} + \frac{14}{3} x^{2} - \frac{9}{7} x + 2$

Step 1

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

$(- \infty, \infty)$

Set-Builder Notation:

${x | x \in ℝ}$

Step 2