Using ode23 matlab for second order differential equation

d^2*ω/dt+((I1-I3)(I1-I2)/I2I3))*Ψ^2*ω=0 If I1>I2 Or I1<I2 If I1>I3 Or I1<I3

[James Tursa]

Please post what you have done so far so we can comment on it and make suggestions.

Answer 1

[Torsten]

Hint:

y''+a^2*y=0 has fundamental solutions sin(a*x) and cos(a*x),

y''-a^2*y=0 has fundamental solutions exp(a*x) and exp(-a*x).

Best wishes

Torsten.