LaTex Syntax

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\[\Huge LaTex \quad Syntax\]

通用规则

  • 空格会被忽略，添加空格有助于读者理解，需要显示时用\quad
  • 特殊标识或对象以\开头
  • 多个变量放在一组: {放在}_{一组}, ${放在}_{一组}$
  • 行内函数$f(x)$, 行内函数$f(x)$

  • 跨行函数$$f(x)$$ 跨行

    \[f(x)\]

    函数

  • multiple lines 
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    b =
\begin{cases}
    b_1, & \text{if}\ b_1 > 0  \
    b_2, & \text{if}\ b_2 > 0  \
    \frac{b_1 + b_2}{2} & \text{otherwise}
\end{cases}

    \(b = \begin{cases} b_1, & \text{if}\ b_1 > 0 \\ b_2, & \text{if}\ b_2 > 0 \\ \frac{b_1 + b_2}{2} & \text{otherwise} \end{cases}\)

示例

LaTex Syntax Sample Description
a \quad b \(a \quad b\) quad space
a \qquad b \(a \qquad b\) double quad space
x_i \(x_i\) subscript
\text{text value} \(\text{text value}\) text
e^{i\pi} \(e^{i\pi}\) upperscript
x_i^2 \(x_i^2\) subscript and upperscript
\sqrt{2} \(\sqrt{2}\) square root
\frac{1}{2} \(\frac{1}{2}\) fraction
\textstyle \sum_{i=1}^n w_ix_i \(\textstyle \sum_{i=1}^n w_ix_i\) sum
\displaystyle \sum_{i=1}^n w_ix_i \(\displaystyle \sum_{i=1}^n w_ix_i\) sum
\because \(\because\) because
\therefore \(\therefore\) therefore
= \(=\) equal to
> \(>\) great than
< \(<\) less than
\geqslant \(\geqslant\) great than and equal to
\leqslant \(\leqslant\) less than and equal to
\geq \(\geq\) great than and equal to
\leq \(\leq\) less than and equal to
\neq \(\neq\) not equal to
\lVert w \rVert \(\lVert w \rVert\) vertical
\langle x, y \rangle \(\langle x, y \rangle\) angle
\underset{a}{max} \(\underset{a}{max}\) under set
\bar{\gamma} \(\bar{\gamma}\) bar
A \cdot B \(A \cdot B\) center dot
A \cdots B \(A \cdots B\) center dots
\infty \(\infty\) infinity
  • absolute value \left|x\right| \(\left|x\right|\)

设置字体大小：

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\tiny
\scriptsize
\footnotesize
\small
\normalsize
\large
\Large
\LARGE
\huge
\Huge