MATH 404 - Fall 2025

  Announcements

    Solutions to Monday's activity are now posted.


    Please check your grades to make sure they look correct!


    There is a ton of helpful material below!


  Syllabus (8/26)

  Term Paper (DUE 12/1)

  J. Bell’s Course Notes

  Desmos Grapher

    

   Week 1 (8/27) - Syllabus and PDE Intro

     HW 1 (due 9/3 in class)

     Read by 9/1:  DuZ: 1.1;   Bell 1 and 3

     Read by 9/3:  DuZ: 1.2-1.4; Bell 2

     Read by 9/8:  DuZ: 1.5-1.6


     HW 1 Solutions


   Week 2 (9/1) - Intro. and Classification

     Read by 9/8:    Bell 4

     HW 2 (due: 9/10)

     Lecture 1 and 2 slides


     Some helpful notes:


   Week 3 (9/8) - Brief Classification Examples; Transport and Method of Characteristics

     Read by 9/15:    DuZ 7.1-7.2

     HW 3 (Due: 9/22)


     Some helpful notes on characteristics:


   Week 4 (9/15) - General First Order, Nonlinearity, Shocks

     Read by 9/22:    DuZ 7.3

     Read by 9/24:    Bell 5 and 6


     Some helpful content:

     HW 3 #6 Solution Movie and Explanation

     Some Interesting Notes


   Week 5 (9/22) - Begin Wave Equation: Derivation, Operator Factoring; d'Alembert

     Read by 10/2:    Bell 7

     Reference:    Strauss: 2.1 and 2.2

     HW 4 (Due: ~ 10/3)


   Week 6 (9/29) - Interpretation and Qualitative Properties for WEQ

     Read by 10/7:    Bell 8

     Verifying d'Alembert

     Examples for the wave equation, and peripheral notes.


   HW 4 Help and Optional Videos

     Duhamel's principle

     Help on VERIFIYING

     Dispersion for WEQ and HEQ


   Week 7 (10/6) - Finite Energy Wave Uniqueness; Introduce and ``Solve" HEQ

     HW 5 (due ~10/17)

     Read by 10/13:    Bell 9

     Reference:    Strauss: 3.2, 3.4


   Week 8 (10/13) - Solving the HEQ and Basic Properties

     Read by 10/23:    Bell 10

     Reference:    Strauss: 2.5, 9.1, 9.2

     Gaussians, Convolutions, and HEQ

     HW 5 Help: How not to do 5(b)


   HW Help Lecture

     Duhamel's principle for Heat

     Heat Activity I Complete Solutions


   Week 9 (10/20) - Finish HEQ Qualitative Properties; Begin Fourier Transform

     Read by 10/27:    Bell 11

     Read by 10/29:    DuZ 4.1, 4.3

     Activity for This Week

     Heat Activity II Solutions

     Comparing Wave and Heat NOTES