Determine the intervals of the domain for which the function is increasing, decreasing, and constant.
Increasing (2, \infty); Decreasing (-\infty, -2)
Increasing (-2, 2); Decreasing (-\infty, -2) \cup (2, \infty)
Increasing never; Decreasing (-\infty, -2) \cup (2, \infty)
Increasing (-\infty, -2) \cup (2, \infty); Decreasing never