Department

Mathematics

Course Code

MATB44H3

Professor

Lisa Jeffrey

Conversion Guide

Boyce/DiPrima, Elementary Differential Equations and Boundary Value Problems

7 ed to 8 ed

Note: Sections that are not included here have no signiﬁcant revisions.

Chapter 1

Arrowheads have been removed from the direction ﬁelds in this chapter.

1.1 Problems 1 through 14 are the same as in 7 ed.

Problems 15 through 20 and 23 are new.

Problems 21 and 22 (8ed) are the same as 15 and 16 (7 ed).

Problems 24 through 33 (8 ed) are the same as 17 through 26 (7 ed).

1.2 Problems 4, 11, 15, and 16 are new.

The others are the same as in the 7 ed, renumbered as follows:

Problems 1 through 3 (8 ed) are the same as 1 through 3 (7 ed).

Problems 5 throujgh 10 (8 ed) are the same as 4 through 9 (7 ed).

Problems 12 through 14 (8 ed) are the same as 10 through 12 (7 ed).

Problems 17 through 19 (8 ed) are the same as 13 through 15 (7 ed).

1.3 Problems 30 and 31 are new.

The others are the same as in 7 ed.

Chapter 2

Arrowheads have been removed from the direction ﬁelds in this chapter.

2.1 This section has been substantially rewritten and its title has also been changed.

Examples 1 and 4 are new; Examples 2 and 3 are the same as Examples 3 and 4

(7ed), respectively.

Problems 23, 26, 32, 41, and 42 are new.

The others are the same as in the 7 ed, renumbered as follows:

Problems 1 through 22 (8 ed) are the same as 1 through 22 (7 ed).

Problems 24 and 25 (8 ed) are the same as 23 and 24 (7 ed).

Problems 27 through 31 (8 ed) are the same as 25 through 29 (7 ed).

Problems 33 through 40 (8 ed) are the same as 30 through 37 (7 ed).

2.2 Example 3 is new, replacing Example 3 from the 7 ed.

2.3 Problems 8, 11, 13, 19, and 30 from the 7 ed have been deleted.

Problems 6, 17, 18, and 24 are new in the 8 ed. The remaining problems in the 8

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ed are the same as the remaining problems from the 7 ed, renumbered as

follows:

Problems 1 through 5 (8 ed) are the same as 1 through 5 (7 ed).

Problems 7 and 8 (8 ed) are the same as 6 and 7 (7 ed).

Problems 9 and 10 (8 ed) are the same as 9 and 10 (7 ed).

Problem 11 (8 ed) is the same as 12 (7 ed).

Problems 12 through 16 (8 ed) are the same as 14 through 18 (7 ed).

Problems 19 through 23 (8 ed) are the same as 20 through 24 (7 ed).

Problems 25 through 29 (8 ed) are the same as 25 through 29 (7 ed).

Problems 30 through 32 (8 ed) are the same as 31 through 33 (7 ed).

2.4 Problem 2 has been replaced by a new problem. Other problems are unchanged.

2.5 The discussion has been modiﬁed in the 8 ed to give more emphasis to the phase

line. and the related Figures 2.5.3a, 2.5.6a, and 2.5.8a are new.

Problems 1 through 24 (8 ed) are the same as 1 through 24 (7 ed).

Problems 25 and 26 (8 ed) are new and Problem 27 (8 ed) is a modiﬁcation of

Problem 25 (7 ed). They deal with bifurcations.

Problem 28 (8 ed) is the same as 26 (7 ed).

2.6 The proof of Theorem 2.6.1 has been revised. As a result, Problem 17

(7 ed) has been replaced by a new Problem 17 (8 ed). The remaining

problems are unchanged.

Miscellaneous problems. Problems 1 through 32 (8 ed) are the same as 1 through

32 (7 ed).

Problems 33 through 35 (8 ed) are the same as 33 through 35 from

Section 2.10 (6 ed).

Problems 36 through 51 (8 ed) are the same as 28 through 43 from

Section 3.1 (7 ed).

Chapter 3

3.1 Problems 1 through 26 (8 ed) are the same as 1 through 26 (7 ed).

Problems 27 and 28 are new.

Problem 27 (7 ed) has been deleted.

Problems 28 through 43 (7 ed) have been moved to Miscellaneous Problems (8 ed).

3.2 Problem 27 is new. The remaining problems are the same as the problems in the 7

ed, renumbered as follows:

Problems 1 through 26 (8 ed) are the same as 1 through 26 (7 ed).

Problems 28 through 38 (8 ed) are the same as 27 through 37 (7 ed).

3.3 Problem 2 (7 ed) has been replaced by a new Problem 2 (8 ed). The remaining

problems are unchanged.

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