L2_A
Homogeneous Linear ODEs of Second Order
L2_B
Homogeneous Linear ODEs with Constant Coefficients
L2_C
Modeling of Free Oscillations of a Mass—Spring System
L2_D
Euler—Cauchy Equations
L2_E
Nonhomogeneous ODEs
L2_F
Modeling—Forced Oscillations. Resonance
L2_G
Solution by Variation
