Math 117
Fall, 2009
Solutions to HW #7
Section 1.6, exercises #14, 24, 26, 28
#14 The functions we are considering are:
I:y=
x2 1
x2 + 1
x 1
; II : y = 2
; III : y = 2
2+1
x
x +1
x
1
(a) Horizontal as
Math 117
Fall, 2009
Solutions to HW #1
Exercises: Section 1.1, #1, 3, 6, 10, 12, 34
1. We are told that the statement P = f (t) means the population of the
city in question equals P million; t years a
Math 117
Fall, 2009
Solutions to HW #4
Section 1.3, problems #24, 38, 40, 42, 52. Section 1.4, do problems
3, 4, 5, 14, 16.
Section 1.3,
#24. The graph we are given looks like:
y
x
We can see that the
Math 117
Fall, 2009
Solutions to HW #5
Section 1.4: exercises #26, 30, 36, section 1.5: exercises # 8, 12,
20
Section 1.4:
t
#26. We are given the function P = 174 (0:9) and we want to write it in
kt
Math 117
Fall, 2009
Solutions to HW #6
Section 1.5, #18, 22, 28, 44, section 1.6, #2, 3, 4, 5, 6, 12
Section 1.5, #18 Function (b) is 2 cos t; so its graph is simply that of cos t;
expanded vertically
Math 117
Fall, 2009
Solutions to HW #3
(5th ed.) Section 1.2, #20, 22, 32. Section 1.3, #2, 8, 10, 38
Section 1.2, #20
a. Let N (t) denote the number of people who have tried the product by
time t: (N
Math 117
Fall, 2009
Solutions to HW #2
(5th edition): Section 1.1, problems 16, 18, 26. Section 1.2, problems 14, 15, 16
Section 1.1
#16. We are given the data from a linear function:
x
y
5:2
27:8
5:3
Math 117
Fall, 2009
Solutions to Practice Test #1
This practice test is intended to give you a general idea of the sort of problems
you might be asked to do on the rst test. Of course, not every type
Note on Series and
Tests for Convergence
This material is all in the textbook, but it might be handy to have a
copy for easy reference and emphasis. Our topic is convergence of innite
series so we rev