Auxiliary equations with repeated roots
14:29
Reduction of orders, 2nd order differential equations with variable coefficients
12:59
You probably haven't solved a quartic equation like this before!
16:42
undetermined coefficients, diff eq, sect4.5#19
22:58
Differential Equations with Repeated Roots: Explained in 3 Ways
20:44
System of differential equations by elimination, ex1
11:44
Second order homogeneous linear differential equations with constant coefficients
19:48
Almost Exact Differential equation & special integrating factor (introduction & example)
18:25