Homework assignments, Differential Equations (Math 256) Fall 2016  (Second Half-Semester)

Prof. Janeba

• Oct. 14: Read chapter 3.1 in Zill-Cullen (See the class WISE site for this text)
• Do p. 89- #3,13,14,19,21,23
  

• Oct. 17:  Continue with the Zill-Cullen 3.1 assignment above.
  
• Oct. 19:  Read 5.1 in Trench, do 5.1 #1,2,3,5.  (There are some answers in the back, starting on page 602)
  
• Oct. 21:  Mid-semester day (no classes)

Week #9:

• Oct. 24: Read 5.2 in Trench, do 5.2 #1,3,4,5,13,15,17.
  
• Oct. 26:
        (Note first WebWorK due Thursday 10/27 at 11:59 pm)
  
• Oct. 28: (Prof. Starr again guest-lectures)  Suggested reading Trench chapter 5.3
  

Week #10:

• Oct. 31: The method of undetermined coefficients;
  
• see Guichard (on WISE) chapter 17.6 for an approach like the one used in class, or:
• see Trench chapter 5.4 (especially the summary) and 5.5 for a slightly different approach than in class, but with the same conclusions.
• Webwork due Thursday Saturday noon.
  
• Nov. 3: More undetermined coefficient examples, and the oracle y_p - guessing handout.
  
• Nov. 5: 
• Quiz 1
  
• Webwork set #2 due Saturday noon. 
  
• Read Trench 5.6, try 5.6 #1,3
  
• Webwork set #3 due Monday  (1st order review)
  

Week #11:

• Nov. 7:
  
• 1st order review,
  
• Reduction of Order
  
• Webwork set #3 due 11:59 pm
  
• Nov. 9: Webwork set #4 due Thursday night. (Reduction of order, a few simpler review problems)
  
• Nov. 11: Exam 1

Week #12:

• Nov. 14:
• Driven oscillators, driving an undamped oscillator at its natural frequency (resonance), the Tacoma Narrows Bridge failure
• (This is covered in Trench, chapter 6.1)
  
• Webwork due Thursday night
• Nov. 16:
• Driven oscillators, driving an undamped oscillator at a frequency different than its natural frequency, the results of the corresponding analysis of a damped oscillator
• (This is covered in Trench, chapter 6.2)
• Webwork due Thursday night
  
• Nov. 18:
• Some mathematical tools useful for Laplace transforms:
• Improper integrals
• Partial Fractions Decomposition
• Read Trench, chapters 8.1-8.3; you can skim a bit on 8.1-8.2, but we will get to most of it.
  
• There will be WeBWorK due the Monday after break
• And possibly an optional no-credit WeBWorK set of calculus review problems
  

Week #13: (Nov. 21-25) Thanksgiving Break

Week #14:

• Nov. 28: The Laplace transform, properties and examples
• Re-read Trench, chapters 8.1-8.3, more carefully this time.
  
• Nov. 30: Quiz 2
• WebWorK #7 due 11:19 pm, Thursday Dec. 1
  
• Dec. 2: Read Trench, chapters 8.4,8.5
• WebWork #8 due 11:59 pm, Tuesday
  

Week #15:

• Dec. 5:
• Dec. 7: Quiz 3
  
• Dec. 9:
  

Finals Week:

• Tues, Dec. 13, 8-11 a.m. Final Exam

Last modified Nov. 18, 2016.
Prof. Janeba's Home Page | Send comments or questions to: mjanebawillamette.edu
Department of Mathematics | Willamette University Home Page