ES.1803 | Spring 2024 | Undergraduate

Differential Equations

Class Notes

Unit 1: Linear Differential Equations

Week 1

Class 1: Topic 1: Introduction to Differential Equations (PDF)

Class 2: Topic 1: Introduction to Differential Equations (cont.) (PDF)

Class 3: Recitation 1 [no notes]

Class 4: Topic 2: Linear Systems (PDF)

Class 5: Topic 3: Input Response (PDF)

Week 2

Class 6: Topic 4: Complex Numbers (PDF)

Class 7: Topic 4: Complex Numbers (cont.) (PDF)

Class 8: Recitation 2 [no notes]

Class 9: Topic 5: Homogeneous, Linear, and Constant Coefficient DEs (PDF)

Class 10 Topic 5: Homogeneous, Linear, and Constant Coefficient DEs (cont.) (PDF)

Week 3

Class 11: Quiz 1 (Topics 1–3)

Class 12: Recitation 3 [no notes]

Class 13: Topic 6: Operators, Inhomogeneous DEs, ERF, and SRF (PDF)

Class 14: Topic 6: Operators, Inhomogeneous DEs, ERF, and SRF (cont.) (PDF)

Week 4

Class 15: Topic 7: Polynomial Input (PDF)

Class 16: Topic 8: Stability (PDF)

Class 17: Recitation 4 [no notes]

Class 18: Topic 9: Engineering Language: Input, Gain, and Phase Lag (PDF)

Class 19: Topic 9: Engineering Language: Input, Gain, and Phase Lag (cont.) (PDF)

Week 5

Class 20: Quiz 2 (Topics 4–8) 

Class 21: Topic 9: Engineering Language: Input, Gain, and Phase Lag (cont.) (PDF) [same as class 19 notes]

Class 22: Recitation 5 [no notes]

Unit 2: First-Order Differential Equations

Class 23: Topic 10: Graphical Methods: Direction Fields and Integral Curves (PDF)

Class 24: Topic 11: Numerical Methods for y’ = f(x,y) (PDF)

Week 6

Class 25: Topic 12: Autonomous Systems (PDF)

Class 26: Topic 12: Autonomous Systems (cont.) (PDF)

Class 27: Recitation 6 [no notes]

Class 28: Quiz 3 (Topic 9)

Unit 3: Linear Algebra

Class 29: Topic 13: Linear Algebra (PDF)

Week 7

Class 30: Topic 14: Row Reduction (PDF)

Class 31: Topic 14: Row Reduction (cont.) (PDF)

Class 32: Recitation 7 [no notes]

Class 33: Topic 15: Inverse, Determinant, and Transpose (PDF)

Class 34: Topic 16: Eigenstuff (PDF)

Week 8

Class 35: Topic 16: Eigenstuff (cont.) (PDF)

Class 36: Topic 17: Matrix Methods for DEs (PDF)

Class 37: Recitation 8 [no notes]

Class 38: Topic 17: Matrix Methods for DEs (cont.) (PDF) [same as class 36 notes]

Unit 4: Impulses, Fourier Series, Partial Differential Equations

Class 39: Topic 20: Step and Delta Functions (PDF)

Week 9

Class 40: [no class]

Class 41: Topic 20: Delta Functions (cont.) (PDF)

Class 42: Quiz 4 (Topics 13–17)

Class 43: Topic 21: Fourier Series (PDF)

Class 44: Topic 21: Fourier Series (cont.) (PDF)

Week 10

Class 45: Topic 22: Fourier Series (cont.) (PDF)

Class 46: Recitation 10 [no notes]

Class 47: Topic 23: Computation Tricks, Sine and Cosine Series (PDF)

Class 48: Review and Catch up [no notes]

Week 11

Class 49: Topic 24: P(D)x = periodic (PDF)

Class 50: Topic 25: PDEs (PDF)

Class 51: Recitation 11 [no notes]

Class 52: Quiz 5 (Topics 20–23)

Class 53: Topic 26: PDEs (cont.) (PDF)

Unit 5: Qualitative Descriptions of Systems

Week 12

Class 54: Topic 27: Linear Phase Portraits (PDF)

Class 55: Topic 27:  Linear Phase Portraits (cont.) (PDF)

Class 56: Recitation 12 [no notes]

Class 57: Topic 28: Nonlinear Systems (PDF)

Class 58: Review and Catch up [no notes] 

Week 13

Class 59: Topic 29: Structural Stability (PDF)

Class 60: Topic 30: Population Models (PDF)

Course Info

Instructor
As Taught In
Spring 2024
Learning Resource Types
Online Textbook
Lecture Notes
Readings
Problem Sets with Solutions
Exams with Solutions