'Returns the column matrix, F, corresponding to the dynamic equations
in implicit form, M x\' = F, where the kinematical equations are not
included'

@property
def dyn_implicit_rhs(self):

    if (self._dyn_implicit_rhs is None):
        raise AttributeError('dyn_implicit_rhs    is    not    specified    for    equations    of    motion    form    [1]    or    [2].')
    else:
        return self._dyn_implicit_rhs
