** NOTE: **
When using interval notation in WeBWorK, remember
that:

You use 'INF' for

And use 'U' for the union symbol.

Enter ** DNE ** if an answer does not exist.

a) Give the domain of

b) Find the critical numbers of

c) Determine the intervals on which

d) Use the First Derivative Test to determine whether each
critical point is a relative maximum, minimum, or neither.

Relative maxima occur at

Relative minima occur at

You can earn partial credit on this problem.