Euler's Method: https://youtu.be/kMie9YFdgiA?si=laxYc3gbbYsjZbas
Differential Equations for IB Math AA HL: https://youtu.be/2eaZPttE5qs?si=zlQgbrOrEAHF93Nk
00:00 - Intro / First Order Differential Equations
01:15 - Second Order Differential Equations
04:44 - Eigenvalues
05:48 - Finishing Question 1
11:06 - Coupled Systems of Differential Equations
11:57 - Eigenvectors
15:16 - Continuing Question 2
16:45 - Phase Portraits
26:10 - Finishing Question 2
29:55 - Question 3
34:03 - More Phase Portraits
41:00 - General Solution with only one Eigenvector
43:58 - Phase Portraits Again
45:24 - Non-Linear Systems / Equilibrium Points
47:33 - Question 4
52:53 - Question 5
