 LIB "control.lib";
controlExample("show"); // let us see all available examples:
==> The list of examples:
==> name: Cauchy1, desc: 1dimensional Cauchy equation
==> name: Cauchy2, desc: 2dimensional Cauchy equation
==> name: Control1, desc: example of a simple noncontrollable system
==> name: Control2, desc: example of a simple controllable system
==> name: Antenna, desc: antenna
==> name: Einstein, desc: Einstein equations in vacuum
==> name: FlexibleRod, desc: flexible rod
==> name: TwoPendula, desc: two pendula mounted on a cart
==> name: WindTunnel, desc: wind tunnel
==> name: Zerz1, desc: example from the lecture of Eva Zerz
def B = controlExample("TwoPendula"); // let us set up a particular example
setring B;
print(R);
==> (m1*L1)*Dt^2, (m2*L2)*Dt^2, 1,(m1+m2+M)*Dt^2,
==> (m1*L1^2)*Dt^2+(m1*g*L1),0, 0, (m1*L1)*Dt^2,
==> 0, (m2*L2^2)*Dt^2+(m2*g*L2),0, (m2*L2)*Dt^2
