NOTE: When using interval notation in WeBWorK, remember that:
You use 'INF' for ∞ and '-INF' for −∞.
And use 'U' for the union symbol.
Enter DNE if an answer does not exist.

()=2+6+5
a) Give the domain of (in interval notation) .................
b) Find the critical numbers of . ........................
(Separate multiple answers by commas.)

c) Determine the intervals on which is increasing and decreasing.
is increasing on: .......................

is decreasing on: .......................
d) Use the First Derivative Test to determine whether each critical point is a relative maximum, minimum, or neither.
Local maxima occur at = .................
(Separate multiple answers by commas.)
Local minima occur at = ..................
(Separate multiple answers by commas.)