Linear Algebra And Differential Equations

MA 26200, FALL 2011

  Instructor: Wenbo Niu
  Recitation TA: Yingwei Wang
  Textbook: Differential Equations and Linear Algebra, Stephen Goode and Scott A. Annin, Third Edition.
  Recitation Time: Thursday, 8:30-9:20 a.m. (Section 2); 10:30-11:20 a.m. (Section 4).
  My Office Hours (MATH 717): Wednesday 2:00-4:00 p.m. (strongly recommended); Tuesday 2:00-3:00 p.m. (avaiable, but not recommended).
  If you are not able to attend any of them, we can talk about your questions over email.
  My Email: wywshtj@gmail.com

Course Information

  • Please find general information on the Course website MA26200 . Please read carefully the Ground Rules and the Assignment Sheet.
  • Your homework will be collected in the Thursday's recitation class by me and handed out in the coming Monday's lecuter class by Prof Niu. The total point for each HW is 10. In each HW, I will choose 3 problems to grade; each graded problem deserves 3 points. So you will get 1 point at least if you turn in your HW.
  • There is a 10-20 minutes quiz every Thursday in the recitation class (starting since the first week). The total point for each quiz is 10. There are usually 2 problems in each quiz. The solutions to the quizzes are posted at 4:30 p.m. every Friday.
  • At the end of the semester, the lowest 2 or 3 HW and quiz scores will be dropped. So if you did not get good scores for several times, then it is fine. You still have many chances to make them up.
  • Here is the general policies statement of my classes.

    • Homework (Average scores of homework and some remarks)

    Homework Section 2 Section 4 Memo
    HW1 6.13 7.48 Lessons 1 & 2.
    HW2 7.06 8.19 Lessons 3, 4 & 5.
    HW3 7.47 7.81 Lessons 6 & 7.
    HW4 8.50 9.29 Lessons 8, 9 & 10.
    HW5 7.28 8.77 Lessons 11 & 12.
    HW6 8.38 8.84 Lessons 13, 14 & 15.
    HW7 7.22 8.58 Lessons 16, 17 & 18.
    HW8 9.34 9.51 Lessons 19 & 20.
    HW9 7.59 9.19 Lessons 21, 22 & 23.
    HW10 7.65 8.13 Lessons 24 & 25.
    HW11 8.47 7.68 Lessons 26, 27 & 28.
    HW12 6.69 7.42 Lessons 29, 30 & 31.
    HW13 7.44 7.06 Lessons 32, 33 & 34.
    HW14 Practice Lessons 35, 36 & 37.

    Quiz (Average scores of quizzes and the solutions)

    Solutions Section 2 Section 4 Memo
    Quiz1 8.44 8.64 Separable equations.
    Quiz2 6.75 7.32 Linear and exact equations.
    Quiz3 7.13 6.54 Bernoulli and homogeneous equations.
    Quiz4 7.63 8.16 Gaussian Elimination and rank.
    Quiz5 6.81 7.00 Inverse and determinants.
    Quiz6 8.38 8.84 Adjoint method and Cramer's Rule.
    Quiz7 8.47 8.87 Linear dependance and linear independance.
    Quiz8 8.97 8.38 Basis and linear transformation.
    Quiz9 7.75 7.81 Kernel and range; eigenvalue and eigenvectors
    Quiz10 7.50 8.23 Differential operator and homogeneous differential equations
    Quiz11 8.22 8.26 Annihilator and nonhomogeneous differential equations
    Quiz12 7.16 7.10 The variation-of-parameters method
    Quiz13 6.28 6.45 Reduction of order and system of differential equations
    Quiz14 Practice First order linear differential systems

    Exams

    Solutions Date Total points Average (Sec.2) Average (Sec.4) Memo
    Exam One 2011.9.19 100 72.84 77.26 Chapters One & Two
    Exam Two 2011.10.26 100 74.06 75.58 Chapters Three, Four & Five
    Final Exam Location 2011.12.14 200 Good luck! Chapters 1-7

    Useful links

    You can find some useful materials from these webpages:
    Prof Zhang's Ma262 webpage
    Prof Hora's Ma262 webpage


    Hope evryone will enjoy this course. ^_^ Thanks.