Hello, I've been trying for weeks to solve a system writen in its matrix form like: M*y(t)'' + C*y(t)' + K*y(t) = F(t) My system can have like 300 dof. If I generate all de equations and I use the dsolve/numeric command, it works but not all the time. I think that there is a problem with the Heaviside function that I have in some coefficients of my matrix. I've been reading in forums that it's better to have a first order system to solve complex problems. For that we can create a procedure as explained in the dsolve/numeric/IVP help.

Hello,

I need to solve a system of ode in matrix. I've been trying with the proc instruction for three days, but it doesn't work! (I'm quite new into Maple).

My system as the form:

M*y'' + C*y' + K*y = F.

M,C,K are matrix of (n*n) (n is between 2 and 200 depending of the problem). y is the unknown, a vector of n degrees of freedom depending of time. F is a Vector of n components.

I've try with: