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## 编译环境
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## 我的问题
在此输入你遇到的问题...
如何改为两倍行间距的同时使得有大括号的公式上下方空格较小？
```
\documentclass{article}
\usepackage{geometry}
\renewcommand{\baselinestretch}{2.0}
\usepackage{bm,amsfonts,amssymb,amsmath,float}\usepackage{sectsty}
\begin{document}
Portfolio optimization aims to obtain an investment with low risk and high
return by distributing money among candidate securities.
\begin{equation}
f(\alpha) =
\left\{
\begin{array}{cl}
2\alpha +3, & \text{if} \ \alpha < 0.5 \\
4\alpha +2, & \text{if} \ \alpha \geq 0.5, \\
\end{array}
\right.
\end{equation}
Markowitz first proposed mean-variance model into portfolio optimization by
minimizing variance to reduce volatility.
\end{document}
```
1 回答
0
> 如何改为两倍行间距
这是 word 中的两倍行距
> 使得有大括号的公式上下方空格较小
谁叫你要空行？空行不就换段了？换段了还要别人间距小？
```tex
\documentclass{article}
\usepackage{amsmath}
\usepackage[
UseMSWordMultipleLineSpacing,
MSWordLineSpacingMultiple=2
]{zhlineskip}
\begin{document}
Portfolio optimization aims to obtain an investment with low risk and high
return by distributing money among candidate securities.
\begin{equation}
f(\alpha) =
\begin{cases}
2\alpha +3, & \text{if }\alpha < 0.5 \\
4\alpha +2, & \text{if }\alpha \geq 0.5, \\
\end{cases}
\end{equation}
Markowitz first proposed mean-variance model into portfolio
\end{document}
```
-
试过了，好用，非常感谢! – 七七 2020-08-01 23:03 回复
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