National Tsing Hua University
Math 4280 - Introduction to Partial Differential Equations
Homework Problems

• If you use the first edition of the textbook, numbering of some homework problems are different from the second edition. When the numberings are different, first edition users should do exercises in brackets [...].
• Problems with asterisks * will be collected and graded. Assignments will be collected every other Friday. You only need to turn in problems in sections been covered for two weeks or more.

Section 1.1:   3, 4, 11, 12

Section 1.2:   1, 3, 6, 7, *8, 9, *10, *13    [1, 3, 5, 6, *7, *8, *11, and 12. Solve u_x+u_y=1.]

Section 1.3:   2, 3, *4, 5, 6

Section 1.4:   1, 6    [1, 5]

Section 2.1:   1, 3, *5, *8, 9, 11    [1, 3, *5, *8, 9, and 11. Find the general solution of 3u_{tt}+10u_{xt}+3u_{xx}=sin(x+t).]

Section 2.2:   1, 3, *6

Section 2.3:   1, 4, *5, 7

Section 2.4:   1, 8, 12, 15, 16, 17, *18

Section 2.5:   1, *4    [1, *2]

Section 3.1:   2, 3

Section 3.2:   1, 2, *3, 5

Section 3.3:   *1, 2

Section 3.4:   1, *3, 5

Section 4.1:   2, *3, 4

Section 4.2:   1, 2, *4    [1, 2, *3]

Section 4.3:   1, 3, *4, 8, *9, 11, 12, 15, *16, 18

Section 5.1:   2, 4, *5, 6, 7, 8, 9

Section 5.2:   4, 5, 6, 10, *11, 13, 14, 17

Section 5.3:   2, *4, 6, 9, 11, 12, 13, *15

Section 5.4:   *6, 7, 8, 9, 10, 12, 13, 14, *15, 16

Section 5.5:   3, 4, 7, *12

Section 6.1:   2, 4, 6, 7, *10, 11

Section 6.2:   1, 3, 6, 7

Section 6.3:   1, 2

Section 7.1:   1, 2, 3, 5

Section 7.2:   1

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