Recent content by sinisterstarr

Thank you all for the advice! SteamKing, would using this substitution mean that the non-differentiated theta variable in the first equation would become an integral of alpha? If I'm correct about that, I feel like I'd be in a worse spot. What should I do with that integral? Ray Vickson, I'm...

Sorry, I guess that would be a lot easier! These are the two equations: (m*a)u” + (I + m*a2 )θ” + (d*a2 )θ’ + (K - m*g*a)θ = 0 (M + m)u” + (m*a)θ” = -f4

Homework Statement I'm trying to solve a system of two second order linear differential equations with the ode45 function. It is a two degree of freedom problem with 2nd order derivatives of both variables, u and theta. I believe that's referred to as a "stiff matrix"). I'm very...