LaTeX matrix in GitHub

latex-in-github.md

This Does Not Work
$\begin{bmatrix}X\Y\end{bmatrix}$

This Does
See how using the math "language" for syntax renders what you want.

This is the code:

```math
\begin{bmatrix}X\\Y\end{bmatrix}
```

This is how it renders:

$$\begin{bmatrix}X\\Y\end{bmatrix}$$

Another workaround to place new lines

$$x_{k} = \begin{bmatrix}
x_{k} \\
x'_{k}
\end{bmatrix} = \begin{bmatrix}
x_{k-1} + x'_{k-1}\Delta t + \frac{x''_{k-1}(\Delta t^2)}{2} \\
x'_{k-1} + x''_{k-1}t
\end{bmatrix} \tag{15}$$

$$x_{k} = \begin{bmatrix}
x_{k} \
x'{k}
\end{bmatrix} = \begin{bmatrix}
x{k-1} + x'{k-1}\Delta t + \frac{x''{k-1}(\Delta t^2)}{2} \
x'{k-1} + x''{k-1}t
\end{bmatrix} \tag{15}$$