답변1
수많은 시각적 서식을 사용하여 수행할 수 있지만 저는 제가 제안하는 두 번째 방법을 선호합니다. 제 생각에는 충분히 명확한 방법입니다.
\documentclass{article}
\usepackage{amsmath}
\DeclareMathOperator{\RE}{Re}
\DeclareMathOperator{\IM}{Im}
\begin{document}
\begin{equation*}
\begin{bmatrix}
\dfrac{\partial^2 F}{\partial^2\RE{a}} \\[3ex]
\dfrac{\partial^2 F}{\partial^2\IM{a}} \\[3ex]
\begin{matrix}
\dfrac{\partial^2 F}{\partial^2 b_1} \\[3ex]
\dfrac{\partial^2 F}{\partial^2 b_2}
\end{matrix}
\rlap{%
\quad
$\displaystyle
\left.
\vphantom{%
\begin{matrix}
\dfrac{\partial^2 F}{\partial^2 b_1} \\[3ex]
\dfrac{\partial^2 F}{\partial^2 b_2}
\end{matrix}%
}\right\rbrace
\dfrac{\partial^2 F}{\partial^2 \mathbf{b}}
$\quad where $\mathbf{b}=\begin{bmatrix} b_1 & b_2 \end{bmatrix}$%
}
\end{bmatrix}
\hphantom{%
\displaystyle
\left.
\vphantom{%
\begin{matrix}
\dfrac{\partial^2 F}{\partial^2 b_1} \\[3ex]
\dfrac{\partial^2 F}{\partial^2 b_2}
\end{matrix}%
}\right\rbrace
\dfrac{\partial^2 F}{\partial^2 \mathbf{b}}
\text{\quad where $\mathbf{b}=\begin{bmatrix} b_1 & b_2 \end{bmatrix}$}%
}
\end{equation*}
\begin{equation*}
\begin{bmatrix}
\dfrac{\partial^2 F}{\partial^2\RE{a}} \\[3ex]
\dfrac{\partial^2 F}{\partial^2\IM{a}} \\[3ex]
\dfrac{\partial^2 F}{\partial^2 b_1} \\[3ex]
\dfrac{\partial^2 F}{\partial^2 b_2}
\end{bmatrix}
=
\begin{bmatrix}
\dfrac{\partial^2 F}{\partial^2\RE{a}} \\[3ex]
\dfrac{\partial^2 F}{\partial^2\IM{a}} \\[3ex]
\dfrac{\partial^2 F}{\partial^2 \mathbf{b}}
\end{bmatrix}
\qquad
\text{where $\mathbf{b}=\begin{bmatrix} b_1 & b_2 \end{bmatrix}$}
\end{equation*}
\end{document}
답변2
아마도 bigdelim
패키지가 도움이 될 수 있습니다.
\documentclass{article}
\usepackage{amsmath}
\usepackage{bigdelim}
\begin{document}
\[
\begin{array}{c}
\ldelim[{4}{*} a \rdelim]{4}{*}\\
b\\
c\\
d
\end{array}
\hspace*{-0.4cm}
\begin{array}{l}
\\
\\
\rdelim\}{2}{*}[$\Rightarrow \frac{\partial^2 F}{\partial^2 b} \quad \text{ where } b=...$]\\
\\
\end{array}
\]
\end{document}