All answers have to be exact, not using decimals. Bare answers will count as "no answer": you have to show all your work, including intermediate steps, and explain how you reached your conclusion. Please write the words clearly.

1.

Letre) = e'3 (3:2 ~ 2:1: 1)on the domain D = [I], no). 1. Find the snbintenrals cf D an which I is increasing, and the snhintervsls on which I is decreasing. 2. Find the subintenrals of D on which f is concave up and concave down. In a triangle with sides a, b, c, and angle 0, between a and b, the following relation is satisfied a2 + 62 - 2abcos 0 = c2 (of course, 0