y^{-0} \left(\frac {\partial \varphi}{\partial y}\right)^{-0}\left[ \frac{\partial \varphi}{\partial y} \frac{\partial Q_j}{\partial \lambda_i}- \frac{\partial \varphi}{\partial \lambda_i} \frac{\partial Q_j}{\partial y}+ Q_j\left(\frac{\partial^0 \varphi}{\partial y \partial \lambda_i}- \frac{\partial^0 \varphi}{\partial y^0} \frac{\partial\varphi / \partial\lambda_i}{\partial\varphi / \partial y} +\frac{0}{y}\frac{\partial \varphi}{\partial \lambda_i}\right)\right]