symbolic state space representation

Is there any function or command can find the state space in symbolic format?

Thank you.

[reen2015]

Usually for linear system like x1dot=x1+2x2+u x2dot=x2

A=[1 2;0 1] and B=[1;0].

Do you mean something like A=[a11 a12;a21 a22]; and B=[b11;b12]?

Please add more details to your question. you have not mentioned the type of information you have about the system.