Math 285 (Differential Equations and Orthogonal
Functions) Fall 2002
This course is an introduction to differential equations, with particular emphasis on boundary value problems and series solutions. Topics we will cover include homogeneous and nonhomogeneous linear equations, boundary value and eigenvalue problems, and Fourier series methods. Numerical and graphical methods will play an important role throughout the semester. We will be using an interactive differential equations program called IODE developed here at the University of Illinois. Some of the class meetings will occur in one of the Engineering workstation (EWS) labs and some of the homework projects will require you to use this system.
The prerequisite for this course is completion of one of the multivariable calculus courses (Math 242, 243 or 245).
Each week the TA will grade a random selection of the submitted homework problems.
Non-Engineering students registered in this course must email me within the first week of classes with their NetID so that I can create an account for them in the EWS labs.
|Homework (including computer projects)||15%|
|First Midterm (9/26 in class)||20%|
|Second Midterm (10/31 in class)||20%|
|Final (12/19 8:00-11:00am)||35% (cumulative)|
No late quizzes will be given, but if you miss a quiz for a reasonable (and documented) excuse-as above-I will disregard that quiz when computing your final grade. At the end of the semester I will drop your lowest quiz grade.
No make-up exams will be given. If a midterm exam is missed because of a serious (and documented) illness or emergency, your semester grade will be determined on the basis of other work done in the course. Exams missed for other reasons will be counted as failures.
If you have a conflict with any of these dates, particularly with the date of the final exam, please contact me to discuss the matter as soon as you are aware of the conflict.
|Aug. 26|| 1.1: Differential Equations and Mathematical Models
1.2: General and Particular Solutions
|Sept. 2||1.3: Slope Fields||first IODE lab and project|
|Sept. 9|| 1.4: Separable Equations
1.5: Linear First-Order Equations
1.6: Substitution Methods and Exact Equations
|Sept. 16|| 2.4: Euler's Method
2.5: Improved Euler's Method
2.6: Runge-Kutta Method
|second IODE lab and project|
|Sept. 23|| 2.1: Population Models
2.2: Equilibrium Solutions
3.1: Second-Order Linear Equations
| Sept. 30 || 3.2: General Solutions of Linear Equations
3.3: Homogeneous Equations with Constant Coefficients
|First midterm exam on 10/1 covering all of chapter 1 plus 2.4, 2.5 and 2.6|
|Oct. 7|| 3.3
3.4: Mechanical Vibrations
|third IODE project|
|Oct. 14|| 3.5: Nonhomogeneous Equations
3.6: Forced Oscillations and Resonance
|Oct. 21|| 3.6
3.8: Boundary Value Problems and Eigenvalues
Chapter 3 Review
|Oct. 28||9.1: Periodic Functions and Trigonometric Series||Second midterm exam on 10/29 covering 2.1, 2.2 and 3.1-3.5|
|Nov. 4|| 9.2: General Fourier Series
9.3: Fourier sine and cosine series
|Nov. 11|| 9.3
9.4: Applications of Fourier series
|fourth IODE project|
|Nov. 18|| 9.4
9.5: Heat Conduction and Separation of Variables
|fifth IODE project|
|Dec. 2|| 9.6: Vibrating Strings and the Wave Equation
9.7: Steady-state temperature and the Laplace equation
|sixth IODE project (extra credit)|
|Dec. 9|| 9.7
10.1: Sturm-Liouville problems