Math 221 Differential Equations Homework
All assignments are from Differential Equations: Computing and Modeling,
by Edwards and Penney, Fourth Edition.
Starred (*) problems are to be turned in, in class, on the date shown in brackets [date]. Note:
this page is for reference purposes only. Assignments posted in class take priority over
the information posted here.
[8/31] Section 1.1, p.8: 1, 5, 7*, 15, 19, 20*, 27, 28, 33, 34, 36*
[9/2] Section 1.2, p.17: 3, 6*, 7, 15, 25, 31*
[9/9] Section 1.3, p27.: 2, 3, 11, 15*, 21, 24*, 25, 26, 28*
[9/11] Section 1.4, p.43: 3, 6*, 12, 13, 19, 24*, 27, 29, 35, 43, 47*, 48
[9/16] Section 1.5, p.56: 3, 7*, 14, 17, 19*, 23, 24, 33, 37*, 38
[9/21] Section 2.1, p.87: 1, 5*, 11, 12, 18, 27, 28*
[9/23] Section 2.2, p.98: 1, 3, 8, 9, 13, 16
[9/25] Section 2.3, p.108: 1, 2*, 9, 10, 19*
[9/25 or 9/28] Section 2.4, p.121: 3, 5*, 6, 11, 14*, 25, 26
Exam 1
[10/5] Section 3.1, p.158: 1, 6*, 11, 13, 17*, 20, 21, 23, 24*, 29*, 30
[10/7] Section 3.1, p.158: 33, 37, 40*, 43, 45
[10/7] Section 3.2, p.170: 2,3,5,7,9*,10,16,17,21,24*,25,26,27
[10/9] Section 3.3, p.183: 2,3,7,9*,15,18,19,21,23,25*,28,29,34*,35
[10/12] Section 3.2, p.172: 38,39*,40*,41
[10/16] Section 3.5, p.210: 1,9*,15,17,31,34*,39,40*
[10/21] Section 3.5, p.210: 47,54,58,59,61
[10/23] Section 3.4, p.195: 4,9,18,19,22
[10/23] Section 3.6, p.222: 1,4,19,23
[10/28] Section 4.1, p.255: 1,3*,11,12,13*,15,21,26*
[10/30] Section 4.2, p.266: 1,4,6*,7,18,19*
[11/2] Section 5.1, p.301: 1,11,13,14,21,24,25,33,34
[11/4] Section 5.2, p.316: 1,3,5,8,9,11,27,29
[11/6] Section 5,4, p.345: 1,2,5,6
[11/9] Sketching phase planes handout: 1,2,3,4*
[11/9] Section 5.2, p.316: 27,29*,30
Exam 2
[11/16] Section 7.1, p.450: 2*,3,6,7,10,11,13,16,19*,23,27,28
[11/18] Section 7.2, p.462: 1,4,5*,6,9,11*,12,17,23,24*
[11/23] Section 7.3, p.472: 1,3,5,7*,10,11,15*,27,29,30*,31,36
[11/30] Section 7.4, p.481: 15*,17,19,22,23,26*,29,33*
[12/4] Section 7.4, p.481: 1,3*,5,7,9
[12/4] Section 7.5, p.: 1,4,5,9,12,17,20,21