! https://zhuanlan.zhihu.com/p/695235678

KaTeX 支持测试

来源：
https://katex.org/docs/supported.html

https://github.com/KaTeX/KaTeX/blob/main/docs/supported.md

在 vscode 上，大部分函数都支持。

下面是测试结果

$$
M_{\mathrm{cg}} = \underbrace{M_{\mathrm{f}}}{\text{机身贡献}} +\underbrace{M,\mathrm{w}} + L_{\mathrm{w}}x_{\mathrm{a}}}{\text{机载贡献}} + \underbrace{M,\mathrm{t}} - L_{\mathrm{t}}l_{\mathrm{t}}}_{\text{平地贡献}}
$$

$$
f(n)=
\begin{cases}
\frac{n}{2},&\text{if $n$ is even}\[5ex]
3n+1,&\text{if $n$ is odd}
\end{cases}
$$

$$
T\mathrm{cos}\varepsilon - D - W\mathrm{sin}\gamma = \cancel{\frac{W}{g} \frac{\mathrm{d}V}{\mathrm{d}t}}
$$

$$
\cancel{T\mathrm{sin}\varepsilon} + L - W\mathrm{cos}\gamma = \cancel{\frac{W}{g} \frac{V^{2}}{R}}
$$

$$
u_{\substack{\max\\min}}=\sqrt{z\pm\sqrt{z^{2}-1}}
$$

Accents

$a'$ a'

$\tilde{a}$ \tilde{a}

$\mathring{g}$ \mathring{g}

$a''$ a''

$\widetilde{ac}$ \widetilde{ac}

$\overgroup{AB}$ \overgroup{AB}

$a^{\prime}$ a^{\prime}

$\utilde{AB}$ \utilde{AB}

$\utilde{A}$

$\undergroup{AB}$ \undergroup{AB}

$\acute{a}$ \acute{a}

$\vec{F}$ \vec{F}

$\Overrightarrow{AB}$ \Overrightarrow{AB}

$\bar{y}$ \bar{y}

$\overleftarrow{AB}$ \overleftarrow{AB}

$\overrightarrow{AB}$ \overrightarrow{AB}

$\breve{a}$ \breve{a}

$\underleftarrow{AB}$ \underleftarrow{AB}

$\underrightarrow{AB}$ \underrightarrow{AB}

$\check{a}$ \check{a}

$\overleftharpoon{ac}$ \overleftharpoon{ac}

$\overrightharpoon{ac}$ \overrightharpoon{ac}

$\dot{a}$ \dot{a}

$\overleftrightarrow{AB}$ \overleftrightarrow{AB}

$\overbrace{AB}$ \overbrace{AB}

$\ddot{a}$ \ddot{a}

$\underleftrightarrow{AB}$ \underleftrightarrow{AB}

$\underbrace{AB}$ \underbrace{AB}

$\grave{a}$ \grave{a}

$\overline{AB}$ \overline{AB}

$\overlinesegment{AB}$ \overlinesegment{AB}

$\hat{\theta}$ \hat{\theta}

$\underline{AB}$ \underline{AB}

$\underlinesegment{AB}$ \underlinesegment{AB}

$\widehat{ac}$ \widehat{ac}

$\widecheck{ac}$ \widecheck{ac}

$\underbar{X}$ \underbar{X}

$\text{'{a}}$ \'{a}

$\text{~{a}}$ \~{a}

$\text{.{a}}$ \.{a}

$\text{\H{a}}$ \H{a}

$\text{`{a}}$ \`{a}

$\text{={a}}$ \={a}

$\text{"{a}}$ \"{a}

$\text{\v{a}}$ \v{a}

$\text{^{a}}$ \^{a}

$\text{\u{a}}$ \u{a}

$\text{\r{a}}$ \r{a}

$\phase{-78^\circ}$

${A \atop B}R$

$\ket{\psi}$

$\braket{\phi|\psi}$

$\dbinom{n}{k}$

${n \choose k}$

$\Set{ x | x<\frac 1 2 }$

$\displaystyle \sum_{\substack{0<i<m\0<j<n}}$

$$
\def\arraystretch{1.5}
\begin{array}{c:c:c}
a & b & c \ \hline
d & e & f \
\hdashline
g & h & i
\end{array}
$$