apply()# StateInputOperator.apply(state, input_)[source]# Apply the operator to the given state / input: \(\Ophat_{\ell}(\qhat,\u) = \Nhat[\u\otimes\qhat]\). Parameters: state(r,) ndarrayState vector. input_(m,) ndarrayInput vector. Returns: out(r,) ndarrayThe evaluation \(\Nhat[\u\otimes\qhat]\).