Homework for Math 161 D
Fall, 2007


Problem Set

Date Assigned

Section

Problems

02 9/10 2.2, p. 71 ff 69a, 70a
2.4, p. 94 ff 2, 3, 5, 16, 17
9/11 2.4, p. 94 ff 52, 54, 55, 62, 65
{*} Prove that limxa sin(x) = sin(a). Then formulate and prove a similar statement about the cosine function. What do these imply about the other four trigonometric functions?

Notation

n manditory problem
(n) helper problem
[n] ungraded problem
{n} optional problem