Elementary Differential Equations, MATH 240, Spring 2009

Instructor: Charles Moore                          
Office: CW 205
Course information
Examinations: Semester examinations, Tuesdays, 7:15 -8:15 pm, February 10, March 10, April 14.
Final exam, Monday, May 11, 11:50 a.m. to 1:40 p.m.
Written assignments, labs, on-line homework, extra credit            

Some practice exams    This includes both blank exams and solution keys from previous semesters when I have taught the course
Exam solutions for this semester: Exam 1,   Exam 2,   Exam 3,  Final exam
Textbook
Math Department exam archive- even more exams for practice
Exam room assignments:  If you are in the 7:30, 8:30, 9:30 or 10:30 recitations, your exam room is Seaton 63. Students in the 11:30, 12:30, 1:30 or 3:30 recitations go to Weber 123

Final Exam room assignments. 7:30, 8:30, 9:30, 10:30 and 11:30 recitations- exam room is Cardwell 101.    12:30, 1:30, 3:30 recitations-exam room is Willard 114.

Schedule

Week of:


Due this week:

January 12      
Lecture: none
Lab: none-lab starts January 27
Recitation:  introduction to the course
nothing                                                      
January 19
Lecture: Monday-  holiday
Lab: none-lab starts next week
Lecture: Wednesday- Chapter 1, sections 1, 2
Recitation: discuss written assignment 1
Written assignment 1 (Friday, Jan. 23)
On-line assignment 1-Separable eqns. (Saturday, Jan. 24)
January 26
Lecture: Chapter 1, sections  3, 4, 5
Lab: Lab 1 (Chapter 1, section 7)
Recitation: discuss written assignment 2
Written assignment 2 (Friday, Jan. 30)
On-line assignment 2- Exact eqns. (Saturday, Jan. 31)
On-line assignment 3- Linear eqns. (Saturday, Jan.31)
February 2
Lecture: Chapter 1, sections 6, 8, 9
Lab: Lab 2 (Chapter 1, section 8)
Recitation: discuss written assignment 3
Lab 1-Slope fields (Tuesday, Feb. 3)
Written assignment 3 (Friday,  Feb. 6)
On-line assignment  4- Bernoulli eqns. (Saturday, Feb. 7)
On-line assignment 5- Homogeneous eqns. (Saturday, Feb.7)
February 9

Lecture: Monday--review for exam 1
Lab: review for exam 1
Exam 1, Tuesday, February 10, 7:15 p.m. - 8:15 p.m.
Lecture: Wednesday--  Chapter 1, sections 12, 13
Recitation: return and discuss exam 1
Lab 2- Numerical Methods (Tuesday, Feb.10)
Extra Credit assignment 1- Numerical methods (Friday Feb. 13)
 
February 16
Lecture: Chapter 2, sections 1, 2, 3
Lab: Lab 3 (Chapter 1, section 14)
Recitation:  discuss written assignment 4
Written assignment 4 (Friday, Feb. 20)
On-line assignment 6- Long-term behavior (Saturday, Feb. 21)
On-line assignment 7- Complex  #'s (Saturday, Feb. 21)

February 23
Lecture: Chapter 2, sections 5, 6
Lab: Lab 4 (Chapter 2, section 4)
Recitation: discuss written assignment 5
Lab 3- Harvesting. (Tuesday, Feb. 24)
Written assignment 5 (Friday, Feb. 27)
On-line assignment 8- Complex var. (Saturday, Feb. 28)
On-line assignment 9- 2nd order homogeneous (Saturday, Feb. 28)
March 2
Lecture:  Chapter 2, sections 7, 8, 11, 13
Lab:  Lab 5 (Chapter 2, section 11)
Recitation: discuss written assignment 6
Lab 4- Complex functions (Tuesday, March 3)
Written assignment 6 (Friday, March 6)
On-line assignment 10- 2nd order inhomogeneous (Saturday, March 7)
On-line assignment 11- Spring-mass (Saturday, March 7)
March 9
Lecture: Monday--review for exam 2
Lab: review for exam 2
Exam 2, Tuesday, March 10 , 7:15 p.m. - 8:15 p.m.
Lecture: Wednesday--  Chapter 2, section 14
Recitation:  return and discuss exam 2
Lab 5-Unforced motion (Tuesday, March 10)
Extra credit assignment 2 - Boundary value probs. (Friday, March 13)

March 16
Spring Break

March 23
Lecture: Chapter 2, section 15, Chapter 3, section 1
Lab: Lab 6 (Chapter 2, section 12)
Recitation: discuss written assignment  7
Written assignment 7 (Friday, March 27)
Extra credit assignment 3- Partial diff. eqns. (Friday, March 27) 
On-line assignment 12- Circuits (Saturday, March 28)
March 30
Lecture:  Chapter 3, sections 2, 3, 5
Lab:  Lab 7 (Chapter 2, section 15)
Recitation: discuss written assignment 8
Lab 6-Num. meths. systems (Tuesday, March 31)
Written assignment 8 (Friday, April 3)
On-line assignment 13-Laplace transforms (Saturday, April 4)
On-line assignment 14-Inverse L.T.'s (Saturday, April 4)
April 6
Lecture:  Chapter 3, sections 5, 6, 7
Lab: Lab 8 (Chapter 3, section 4)
Recitation:  discuss written assignment 9
Lab 7-Numerical methods-systems (Tuesday, April 7)
Written assignment 9 (Friday, April 10)
On-line assignment 15-Impulse fcns. (Saturday, April 11)
April 13
Lecture: Monday-- review for exam 3
Lab: review for exam 3
Exam 3, Tuesday, April 14, 7:15 p.m. - 8:15 p.m.
Lecture: Wednesday--  Chapter 4, section 1
Recitation:  return and discuss exam 3
Lab 8-Stability (Tuesday, April 15)
On-line assignment 16-Systems  (Saturday, April 18)
April 20
Lecture:  Chapter 4, sections 3, 4
Lab: Lab 9 (Chapter 4, section 2)
Recitation: discuss written assignment 10
Written assignment 10 (Friday, April 24)
On-line assignment 17- Series solns. (Saturday, April 25)
April 27
Lecture: Chapter 4, sections 7, 8
Lab: Lab 10 (Chapter 4, section 5)
Recitation: discuss written assignment 11
Lab 9- Taylor series (Tuesday, April 28)
Written assignment 11 (Friday, May 1)
Extra credit assignment 4- Padé approx.  (Friday, May 1)
On-line assignment 18- Radius of convergence (Saturday, May 2)
May 4
Lecture: Monday--Chapter 4, sections 8, 9
Wednesday-- review for final
Lab:  discuss written assignment 12
Recitation: review for final
Lab 10-Series solns. (Tuesday, May 5)
Written assignment 12 (Friday, May 8)
On-line assignment 19- Euler eqns. (Saturday, May 9)

Final Exam, Monday, May 11, 11:50 a.m. - 1:40 p.m.