Typora 插入 LaTeX 公式 （对齐）

最近写Typora，需要写公式，记录简单的LaTeX公式排版，mathpix好用，但现在免费次数越来越少了，还是得记忆一下。

公式对齐

将公式写在$$ \begin{aligned}...\end{aligned} $$中间，用&对齐，\\换行，

$$
\begin{aligned}
A & = 1 + 1 \\
  & = 2
\end{aligned}
$$

$$\begin{array}{rl}A& =1+1\\ & =2\end{array}$$

$$
\begin{aligned}
A & =\frac{L_2-L_1}{L_3-L_2} \cdot \frac{m_3-m_2}{m_2-m_1} \\
& =\frac{L_2-L_1}{L_3-L_2} \cdot \frac{\frac{1}{t_3}-\frac{1}{t_2}}{\frac{1}{t_2}-\frac{1}{t_1}} \\
& =\frac{t_1}{t_3} \cdot \frac{L_2-L_1}{L_3-L_2} \cdot \frac{t_3-t_2}{t_2-t_1} \\
\end{aligned}
,
\qquad
\begin{aligned}
m_0 & =\frac{m_3-m_1 A}{1-A} \\
& =\frac{\frac{1}{t_3}-\frac{1}{t_1} A}{1-A} \\
& =\frac{t_1-t_3 A}{(1-A) t_1 t_3}
\end{aligned}
$$

A=L2−L1L3−L2⋅m3−m2m2−m1=L2−L1L3−L2⋅1t3−1t21t2−1t1=t1t3⋅L2−L1L3−L2⋅t3−t2t2−t1,m0=m3−m1A1−A=1t3−1t1A1−A=t1−t3A(1−A)t1t3 \begin{aligned} A & =\frac{L_2-L_1}{L_3-L_2} \cdot \frac{m_3-m_2}{m_2-m_1} \\ & =\frac{L_2-L_1}{L_3-L_2} \cdot \frac{\frac{1}{t_3}-\frac{1}{t_2}}{\frac{1}{t_2}-\frac{1}{t_1}} \\ & =\frac{t_1}{t_3} \cdot \frac{L_2-L_1}{L_3-L_2} \cdot \frac{t_3-t_2}{t_2-t_1} \\ \end{aligned} , \qquad \begin{aligned} m_0 & =\frac{m_3-m_1 A}{1-A} \\ & =\frac{\frac{1}{t_3}-\frac{1}{t_1} A}{1-A} \\ & =\frac{t_1-t_3 A}{(1-A) t_1 t_3} \end{aligned} A​=L3​−L2​L2​−L1​​⋅m2​−m1​m