王白水
1
You can now use LaTeX,
You can write a long expression, for example
$$
\sqrt{(-1)} \; 2^3 \; \sum \; \pi
$$
↓
\sqrt{(-1)} \; 2^3 \; \sum \; \pi
You can also write an abbreviation, for example $P_2Y_{12}$, → P_2Y_{12}
For more content, please see
https://zhuanlan.zhihu.com/p/59412540?utm_id=0
Example
doggie
3
Why use LaTeX? How to use it?
You can check out this introduction: LaTeX 从入门到够用（1）为什么应该用它写论文_哔哩哔哩_bilibili