MATH 5A - Differential Equation & Linear Algebra II -  Spring 09    

Syllabus:   Syllabus
Homework:  Complete the assignments using  webwork  .

Announcements :

6/16: Out of 131 students, we have 2 A+, 21A, 18 A-, 10 B+, 19B, 11B-, 15C+, 19C, 16 D and F.
      Solution to final exam: version A  and version B   .

6/15: The average  grade is as folows,
         HW 14/15, Quiz 18/20, midterm  57/75,  final 68/100, and the total grade is 77.8063.
         I'll be in my office, SH6501,  on Wednesday , June 17th between 10 and 12.
         You may stop by to check the tests.
         Or you can make appointment after the fall quarter starts.

4/25 : 1.  The midterm  will cover sctions  4.1- 4.5, 5.1- 5.3.  
               You will be asked to show all the work and your reasoning on the exam.
               A full solution is wanted, not just the final answer.
               Answers without justification will get little or no partial credits.
          2.  Please bring your student ID or driver license (any photo ID) to exam.

          3.  No calculator or notecard in exam.
          4.  The practice exam is
here  . (The solution will be posted later.)

4/27  solution   to practice exam.
         (The problem in #6 should be  y''  4y'+4y=e^(2t)/t .)

5/11  Solution   to the midterm.

6/3   1. The Final exam is cumulative. It covers everything  (Check the teaching schedule below) .
            There are 6 problems. You will be asked to show all the work and your reasoning on the exam.  
        2.  Please bring your student ID or driver license (any photo ID) to exam.

        3.  No calculator or notecard in exam.
        4.  The practice exam is  here   .


6/5  solution   to the practice final.
6/7  correction   to the solution of 1(b).

                        

                     Teaching  Schedule    ( subject to change )

Date
Section
Topics
3/30
4.1
 Simple Harmonic Motion.
 Solution to the Undamped Unforced Oscillator
4/1
4.1
Component forms & Single wave forms
4/3
4.2
Characteristic Equations and roots of DEs.
Real Characteristic roots.
4/6
4.3
Complex roots
4/8, 4/10
4.4
Undetermind Coefficients
4/13
4.5
Variation of Parameters
4/15
4.6
Forced Osillations; Resonance; Beats
4/17
4.7
 Energy; Conservative systems
  Conversion from Higher order DEs to Systems of 1st order DEs.
4/20
5.1
 Linear Transformations
4/22
5.2
Kernel; Image; Rank
4/24
5.3
Eigenvalues, Eigenvectors, and Eigen-spaces.
4/27

Examples of Eigenvalues, Eigenvectors
4/29

Dimension theorem; Linear independence of Eigenvectors
5/1

Midterm
5/4, 5/6
5.4
Coordinates relative to a basis; Diagonalization;
Decoupling  DEs.
5/8
6.1
Systems of Linear First Order DEs
5/11
6.2
 Linear system with real eigenvalues: distinct & repeated eigenvalues;
 Phase Portraits;
Stable/Unstable Equilibrium Solutions
5/13
6.3
Linear Systems with complex Eigenvalues
5/15

More phase portraits
 Real nonzero Distinct E-values
Complex Conjugate E-values
Borderline Cases
5/18
6.4
Phase Plane Portraits for degenerate cases: zero eigenvalues  &
                                                                  repeated eigenvalues
5/20
6.7
Nonhomogeneous Linear Systems: Variation of  Parameters
5/22
6.7, 6.5
Nonhomogeneous Linear Systems:: Undetermined Coefficients
                                                       Decoupling  a system of DEs
5/27
7.1
Nonlinear Systems: Equilibrium points.
                               h- and v- nullclines.
Suggested Exercises: 7.1 #10-13, 27-30
5/29, 6/1
7.2
Nonlinear system:  Jacobian matrix and  Linearization.
                             Classification and stability of Equilibrim points
Suggested Exercises: 7.2  #3-5, 6-10
6/3, 6/5

Review
6/9

Final Exam