Spring 2026: MATH 331, Partial Differential Equations
Homework Assignments

Homework Assignment #1 (Due Friday, 2/6/2026, in class):
Section 0.1: 6, 14, 22a
Section 0.2: 3, 4
Section 0.3: 3abc
Section 0.4: 1a
Section 0.Misc: 3, 6
Section 1.1: 1cd, 2bd, 3, 6, 7, 8


Homework Assignment #2 (Due Friday, 2/13/26, in class):
Section 1.2: 1bc, 2, 7b
Section 1.3: 2, 3, 4, 5, 6, 9abc
Section 1.4: 1defg, 2, 3cde, 5ab
Section 1.5: 2, 5


Homework Assignment #3 (due Friday, 2/20/26, in class):
Section 1.9: 1, 2, 3, 5
Section 1.10: 1, 2, 3b, 6 (just show orthogonality, no need to do anything else)
Section 1.Misc: 9, 13, 21, 22, 30abc
Section 2.1: 2


Homework Assignment #4 (due Monday, 3/2/26, in class):
Section 2.2: 1, 2, 4
Section 2.3: 1 (four terms), 5, 6
Section 2.4: 4, 6
Section 2.5: 1
Section 2.7: 3abc (no need to sketch), 5ab


Homework Assignment #5 (due Monday, 3/9/26, in class):
Section 2.8: 3
Section 2.10: 1, 2, 3, 4, 8
Section 2.11: 2, 5
Section 2.Misc: 3, 20


Homework Assignment #6 (due Monday, 3/23/26, in class):
Section 3.1: 3
Section 3.2: 1, 4, 5
Section 3.3: 1, 2, 10
Section 3.Misc: 1, 26