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发信人: eggs (铁蛋), 信区: Linux
标  题: Re: TeX问题:如何给任意段落(含文字,公式)加框?
发信站: BBS 水木清华站 (Mon Nov 29 10:33:57 1999)

【在 energy (长白山) 的大作中提到: 】
∶ 头痛死了, 如果是Word就很简单, 而在tex里面太麻烦.
∶ 如果用\fbox等,里面的文字不换行, 也加不进公式.
∶ 如果用amstex的\boxed, 又只能对一行公式加框.
∶ 有什么办法能够对整个段落加框?
∶ //sigh, 要甩开M$&Word很辛苦啊!
example:

\fbox{%
\begin{minipage}{.9\textwidth}
\begin{equation}
\hat x(n)=
\left\{\begin{array}{l} 0, \quad n<0 \\
\dfrac{x(n)}{x(0)} -  \sum\limits_{k=0}^{n-1}
\dfrac{k}{n} \hat x(k) \dfrac{x(n-n)}{x(0)}, \quad n>0
\end{array}\right.
\end{equation}

Think of PDF as PostScript without programming constructs. A PDF
file consists of graphical objects tight together in such a way that
fast viewing is possible and incremental updates become possible.

\begin{equation}
\alpha_{t+1}(j) = \left[ \sum\limits_{i=1}^{N} \alpha_t(i)a_{ij} \right]b_j({\bf
o}_t+1),
\begin{array}{l}
1 \le t \le T-1 \\[-1ex]
1 \le j \le N
\end{array}
\end{equation}
\end{minipage}
}

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