---
# System prepended metadata

title: share

---

# share 

We can share typing at the same document at the same time

- point one
- point two


Mathematics

$\frac{\partial u}{\partial t} = \nabla^2 u$


\begin{bmatrix}
\cos\theta & -\sin\theta \\
\sin\theta & \cos\theta
\end{bmatrix}

The point of markdown is

1. simpler notation
1. don't use too many fancy formatting
3. can inter convert to other format easily


```{.python}
import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(0, np.pi, 300)
plt.plot(x, np.cos(4*x))
```