apply()# LinearOperator.apply(state, input_=None)[source]# Apply the operator to the given state / input: \(\Ophat_{\ell}(\qhat,\u) = \Ahat\qhat\). Parameters state(r,) ndarrayState vector. input_(m,) ndarray or NoneInput vector (not used). Returns out(r,) ndarrayApplication \(\Ahat\qhat\).