LaTeX study notes 2

2019.11.27

1. The partial derivative symbol can \partialrepresent.

2. Construction of the form of equations braces, may be used case. Other Reference: https://blog.csdn.net/miao0967020148/article/details/78712811

\begin{cases}

0& \text{x=0}\

1& \text{x!=0}

\end{cases}

Note: in case the environment, but use the same & aligned.

3 \leqslantor less. \geqslantIt is greater than or equal.