Hello all, I am very new to Mathematica and my question might seem mundane. So, please bear with me. I am trying to extract the descriptor state-space model matrices from a set of state space equations. I have already done this.

M = StateSpaceModel[stateequations, states, vin[t], outputequations, 
  t]

We know that the descriptor state space is of the form:

kx'[t]=ax[t]+bu[t]*

y[t]=cx[t]+du[t]

I am trying to extract the matrices k, a, b, c, d.

I have tried

A=M[[1]]
B=M[[2]]

and so on and have been unsuccessful and have no idea how to do it.

Can anyone help me with this? Thanks in advance!