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# 如何快速输入复杂的财务公式 — 以 β 系数为例

1. 新建 Writer 文档；
2. 插入 > 对象 > 公式；
3. ```%beta_i
= {COV(R_i, R_m)} over { {%sigma_m} ^2 }
= {%rho_{i,m} %sigma_i %sigma_m} over { {%sigma_m} ^2 }
= %rho_{i,m} times { %sigma_i over %sigma_m }```

其中：% 为转意字符：%beta 会被转意为希腊字母 β，%sigma 会被转意为希腊字母 σ，%rho 会被转意为希腊字母 ρ.
Over 两侧的部分会被放置在横线除号上下。
花括号 { } 用于组合。
下划线 _ 表示下标。
^ 表示上标（幂）。
times 会被转意为交叉乘号。

4. 点击Writer的空白处，得到结果：

Tips:

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