Math 23, Winter 2007

Differential Equations

General Information Syllabus Homework Assignments Exam Related



Homework assignments

Practice problems are not to be submitted, but are very important. You are encouraged to do even more of these than are assigned. Please use the solutions in the back of the book to be sure that you understand these problems thoroughly.

Written assignments will be submitted and collected via assignment boxes.
Friday, March 2 and Monday, March 5:
  • Read
    10.7, 10.8
  • Practice problems  
    10.7: 6(a), 13
    10.8:i 14(a)(b)
  • Written assignment  (due Wednesday, March 7)
    10.7: 5(a), 21
    10.8: 12(a)(b)

Friday, February 23 through Thursday, March 1:
  • Read
    10.3, 10.4, 10.5, 10.6.
  • Practice problems  
    10.3: 4, 6
    10.4: 17, 18
    10.5: 8, 10
    10.6: 11(a), 13(a)
  • Written assignment  (due Monday, March 5)
    10.3: 2, 5
    10.4: 15, 16
    10.5: 7, 11
    10.6: 10(a), 14(a)

Wednesday, February 21:
  • Read
    10.1, 10.2.
  • Practice problems  
    10.1: 5, 9, 14
    10.2: 13, 15, 18
  • Written assignment  (due Friday, March 2)
    10.1: 6, 8, 16
    10.2: 14, 16, 17

Monday, February 19:
  • Read
    5.2, 5.3.
  • Practice problems  
    5.2: 2, 8, 12, 20
    5.3: 7, 22
  • Written assignment  (due Wednesday February 28)
    5.2: 3, 6, 14, 21
    5.3: 6, 10

Friday, February 16:
  • Read
    5.1.
  • Practice problems  
    5.1: 7, 10, 14, 23
  • Written assignment  (due Monday February 26)
    5.1: 5, 8, 13, 24, 28 :

Wednesday, February 14:
  • Read
    9.3.
  • Practice problems  
    9.3: 2, 9, 13, 17, 20
  • Written assignment  (due Friday February 23)
    9.3: 3, 7, 14, 18, 24

Wednesday, February 7; Monday, February 12:
  • Read
    2.5, 9.1, 9.2.
  • Practice problems  
    2.5: 2, 10, 21.
    9.1: 6, 7, 9
    9.2: 3(a)(b)(c), 8 (no direction field)
  • Written assignment  (due Monday February 19)
    2.5: 3, 12, 20.
    9.1: 5, 10, 12.
    9.2: 2(a)(b)(c), 6 (no direction field)

Monday, February 5:
  • Read
    7.6, 7.8.
  • Practice problems  
    7.8: 3, 6, 9, 12.
  • Written assignment  (due Wednesday February 14)
    7.8: 2, 5, 8, 11. No direction fields.

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Friday, February 2:
  • Read
    7.5, 7.6.
  • Practice problems  
    7.5: 11, 16, 18.
    7.6: 3, 8, 9.
  • Written assignment  (due Monday February 12)
    7.5: 12, 15, 29.
    7.6: 5, 7, 10. Don't worry about doing direction fields.

Wednesday, January 31:
  • Read
    7.2 note eg 2, 7.3, 7.4.
  • Practice problems  
    7.2: 13, 19, 24.
    7.3: 5, 16, 22.
    7.4: 6, 7.
  • Written assignment  (due Wednesday February 7)
    7.2: 14, 18, 22.
    7.3: 3, 19, 24.
    7.4: 2(a)(b), 4.

Monday, January 29:
  • Read
    7.1.
  • Practice problems  
    7.1: 2, 3, 5, 20, 23.
  • Written assignment  (due Monday February 5)
    7.1: 1, 4, 6, 19, 22.

Friday, January 26:
  • Read
    3.8.
  • Practice problems  
    3.8: 2, 6, 11, 13, 17.
  • Written assignment  (due Friday February 2)
    3.8: 1, 7, 12, 14, 18.

Wednesday, January 24:
  • Read
    3.6, 3.7.
  • Practice problems  
    3.6: 3, 8, 15, 16.
    3.7: 5, 9, 14, 16.
  • Written assignment  (due Wednesday January 31)
    3.6: 1, 9, 17, 18.
    3.7: 6, 10, 15, 17.

Monday, January 22:
  • Read
    3.5.
  • Practice problems  
    3.5: 24, 26, 27, 29.
  • Written assignment  (due Monday January 29)
    3.5: 23, 25, 28, 30.

Friday, January 19:
  • Read
    3.2, 3.3.
    Review for test.
  • Practice problems  
    3.2: 2, 9, 21, 25.
    3.3: 1, 15, 25.
  • Written assignment  (due Friday January 26)
    3.2: 3, 8, 22, 26.
    3.3: 4, 17, 24.

Wednesday, January 17:
  • Read
    3.1, 3.4, 3.5.
  • Practice problems  
    3.1: 2, 9, 19.
    3.4: 10, 22, 24.
    3.5: 4, 11.
  • Written assignment  (due Monday January 22)
    3.1: 1, 10, 20.
    3.4: 11, 19, 23.
    3.5: 3, 12.

Friday, January 12:
  • Read
    2.3
  • Practice problems  
    2.3: 4, 13, 17, 30, 32.
  • Written assignment  (due Friday January 19)
    2.3: 1, 14(a),(b),(c), 16 , 28, 29.

Wednesday, January 10:
  • Read
    2.1, 2.4
  • Practice problems  
    2.1: 13, 17, 33.
    2.4: 2, 8, 29.
  • Written assignment  (due Wednesday January 17)
    2.1: 14, 16, 30.
    2.4: 2, 9, 27(b), 28.

Monday, January 8:
  • Read
    2.2, 2.6
  • Practice problems  
    2.2: 8, 12, 17, 23, 36.
    2.6: 1, 2, 11, 22.
  • Written assignment  (due Friday January 12)
    2.2: 7, 11 15, 22, 34
    2.6: 3, 4, 10, 21.

Friday, January 5:
  • Read
    1.1-1.3.
  • Practice problems  
    1.1: 19, 20, 23, 24.
    1.2: 3, 7, 13.
    1.3: 9, 18.
  • Written assignment  (due Wednesday January 10)
    1.1: 15-18, 21.
    1.2: 9, 19.
    1.3: 10, 19.