## 编译环境 操作系统 * [* ] Windows 7/8/10 * [ ] macOS * [ ] Linux `若需勾选，请把[ ]改成[x]` Tex发行版 * [* ] TexLive `年份` * [ ] MikTeX `版本号` * [ ] CTeX `若需勾选，请把[ ]改成[x]` ## 我的问题 ①如何解决表格后空白较大的问题； ②如何解决表格后的文字另起一段的问题，也就是做到顶端对齐； ③如何把两倍行间距仅对文字起作用，对表格和公式不起作用； ``` \documentclass{article} \usepackage{amsmath} \usepackage[UseMSWordMultipleLineSpacing, MSWordLineSpacingMultiple=2]{zhlineskip} \usepackage{float} \usepackage{multirow} \usepackage{booktabs} \newtheorem{example}{Example} \begin{document} \begin{example} Portfolio optimization aims to obtain an investment with low risk and high return by distributing money among candidate securities. \begin{table}[H] \setlength{\abovecaptionskip}{0pt} \setlength{\belowcaptionskip}{10pt} \caption{Distributions} \label{TableExm5} \centering \begin{tabular*}{12.6cm}{ccccc cc} \hline $i$ & 1 & 2 & 3 & 4 & 5 &6 \\ \hline $\tilde{x}_{i1}$ & $Z(1,2,4)$ & $Z(3,4,6)$ & $Z(5,6,8)$ & $Z(3,4,6)$ & $Z(5,7,8)$ & $Z(9,10,12)$ \\ $\tilde{x}_{i2}$ & $Z(5,7,8)$ & $Z(9,11,12)$ & $Z(10, 11, 13)$ & $Z(1,2,4)$ & $Z(3,5,6)$ & $Z(6,8,9)$ \\ \hline \end{tabular*} \end{table} It is easy to verify that $$ 1.5\cdot \Upsilon_{i1} (\alpha, 1.5)- \Upsilon_{i2} (\alpha, -1) \geq 0,\quad i = 1, 2, \ldots, 6, $$ \end{example} Markowitz first proposed mean-variance model into portfolio \end{document} ```