同じTeXコードなのだが (2nd)


\(
T(f^{-1})( (y_1, \ldots, y_{m}),
\begin{pmatrix}
\eta_1 \\
\vdots \\
\eta_{m}
\end{pmatrix}) \\ = \\
(f^{-1}(y_1, \ldots, y_{m}), \\
\begin{pmatrix}
\frac{\partial f_1}{\partial x_1}(f^{-1}(y_1, \ldots, y_{m})) & \ldots & \frac{\partial f_1}{\partial x_{\ell}}(f^{-1}(y_1, \ldots, y_{m})) \\
\vdots & \ddots & \vdots \\
\frac{\partial f_{m}}{\partial x_1}(f^{-1}(y_1, \ldots, y_{m})) & \ldots & \frac{\partial f_{m}}{\partial x_{\ell}}(f^{-1}(y_1, \ldots, y_{m})) \\
\end{pmatrix}^{\triangleleft}
\cdot \\
\begin{pmatrix}
\eta_1 \\
\vdots \\
\eta_{m}
\end{pmatrix}
)
\)