Homework

Dennis G. Zill, A First Course in Differential Equations with Modeling Applications, 11th ed., 2018.

Homework 8.4     Due 11:59pm Mon 12/11.

I improved on the book's exercises.
Please do the problems on this PDF.
Homework 8.1     Due 11:59pm Sat 12/9.

please read section 8.1
graded for correctness:
     # 4, 12, 20, 22
graded for completeness only:
     # 3, 7, 13, 15, 19, 23
Homework 3.3     Due 11:59pm Wed 12/6 (revised).

please read section 3.3
graded for correctness:
     # 2, 8, 11
graded for completeness only:
     # 1, 9, 17
Homework 7.3     Due 11:59pm Sat 12/2.

please read section 7.3
graded for correctness:
     # 16, 26, 46, 66
graded for completeness only:
     # 6, 15, 25, 39, 45, 55, 61, 67
Homework 7.2     Due 11:59pm Mon 11/27 (revised).

please read section 7.2
graded for correctness:
     # 4, 18, 36, 40
graded for completeness only:
     # 7, 15, 17, 23, 27, 35, 39, 41
Homework 7.1     Due 11:59pm Sun 11/19 (revised).

please read section 7.1
graded for correctness:
     # 4, 14, 28
graded for completeness only:
     # 3, 13, 15, 25, 27, 31, 39
Homework 6.2     Due 11:59pm Tue 11/14 (updated again).

please read section 6.2
graded for correctness:
     # 4, 8, 20
graded for completeness only:
     # 1, 3, 7, 19, 21, 26
Homework 6.1     Due 11:59pm Sat 11/11 (updated).

please read section 6.1
graded for correctness:
     # 2, 8, 12, 26, 32
graded for completeness only:
     # 1, 7, 13, 15, 19, 27, 33
Homework 5.3     Due 11:59pm Mon 11/6 (updated).

I greatly improved the book's exercises.
Please do the problems on this PDF.
Homework 5.1 part II     Due 11:59pm Mon 10/30.

please read section 5.1
graded for correctness:
     # 30, 37, 38
graded for completeness only:
     # 3, 25, 41, 43
Homework 5.1 part I     Due 11:59pm Sat 10/28.

please read section 5.1
graded for correctness:
     # 6, 26
graded for completeness only:
     # 7, 11, 23, 27, 29
Homework 4.4     Due 11:59pm Mon 10/23.

please read section 4.4
graded for correctness:
     # 2, 10, 28, 34
graded for completeness only:
     # 1, 5, 7, 15, 19, 27, 31, 33
Homework 4.2     Due 11:59pm Sat 10/21.

please read section 4.2
graded for correctness:
     # 2, 10
graded for completeness only:
     # 3, 5, 9, 11, 13
Homework 4.3     Due 11:59pm Sat 10/14.

please read section 4.3
graded for correctness:
     # 4, 10, 16, 32
graded for completeness only:
     # 3, 9, 11, 19, 25, 31, 35, 51
Homework 4.1     Due 11:59pm Mon 10/9.

please read section 4.1
graded for correctness:
     # 2, 18, 32, 40
graded for completeness only:
     # 1, 5, 17, 19, 23, 31, 33
Homework 3.2     Due 11:59pm Sat 10/7.

please read section 3.2
graded for correctness:
     # 2
graded for completeness only:
     # 1, 5, 19
Homework 3.1     Due 11:59pm Mon 10/2.

please read section 3.1
graded for correctness:
     # 6, 14, 44
graded for completeness only:
     # 3, 11, 15, 19, 21, 35
Homework 2.6     Due 11:59pm Sat 9/30.

I improved the book's exercises.
Please do the problems on this PDF.
Homework 2.4     Due 11:59pm Mon 9/25.

please read section 2.4
graded for correctness:
     # 4, 11, 14, 22
graded for completeness only:
     # 3, 13, 21, 25, 27, 45
Homework 2.3     Due 11:59pm Sat 9/23.

please read section 2.3
graded for correctness:
     # 4, 22, 29
graded for completeness only:
     # 3, 9, 21, 37, 45, 57
Homework 2.2     Due 11:59pm Mon 9/18.

please read section 2.2
graded for correctness:
     # 6, 24, 48
graded for completeness only:
     # 3, 5, 16, 17, 33, 43, 47, 49
Homework 2.1     Due 11:59pm Sat 9/16.

direction field plotter (not bad)
please read section 2.1
graded for correctness:
     # 2, 6, 22
graded for completeness only:
     # 1, 7, 13, 21, 25, 39, 41
Homework 1.3     Due 11:59pm Mon 9/11.

please read section 1.3
graded for correctness:
     # 3, 28
graded for completeness only:
     # 1, 5, 15, 17, 19
Homework 1.2     Due 11:59pm Sat 9/9.

please read section 1.2
graded for correctness:
     # 4, 30
graded for completeness only:
     # 1, 7, 13, 31, 33, 45, 47
Homework 1.1     Due 11:59pm Wed 9/6.

please read section 1.1
graded for correctness:
     # 16, 26, 32
graded for completeness only:
     # 3, 5, 13, 19, 23, 25, 29, 33