## [MathJax](http://www.mathjax.org)

Times: $$28 \times 28$$

Sum and subscripts: $$\begin{eqnarray}\sigma\left(b + \sum_{l=0}^4 \sum_{m=0}^4  w_{l,m} a_{j+l, k+m} \right).\tag{125}\end{eqnarray}$$

supperscripts: $$a^1 = \sigma(b + w * a^0)$$

$$\eta = 0.1 \dot{F}$$

$$f(z)\equiv \max(0, z)$$

$$\lambda = 0.1$$

$$c^{L-1}$$

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$

$$f(a) = \frac{1}{2\pi i} \oint\frac{f(z)}{z-a}dz$$

$$\cos(θ+φ)=\cos(θ)\cos(φ)−\sin(θ)\sin(φ)$$

$$\int_D ({\nabla\cdot} F)dV=\int_{\partial D} F\cdot ndS$$

$$\vec{\nabla} \times \vec{F} = \left( \frac{\partial F_z}{\partial y} - \frac{\partial F_y}{\partial z} \right) \mathbf{i}
        + \left( \frac{\partial F_x}{\partial z} - \frac{\partial F_z}{\partial x} \right) \mathbf{j} + \left( \frac{\partial
        F_y}{\partial x} - \frac{\partial F_x}{\partial y} \right) \mathbf{k}$$

$$\sigma = \sqrt{ \frac{1}{N} \sum_{i=1}^N (x_i -\mu)^2}$$

$$(\nabla_X Y)^k = X^i (\nabla_i Y)^k = X^i \left( \frac{\partial Y^k}{\partial x^i} + \Gamma_{im}^k Y^m \right)$$

$$
\left[
\begin{array}{lcr}
a1 & b22 & c333 \\
d444 & e555555 & f6
\end{array}
\right]
$$

$$
\left\{
\begin{aligned}
&a+b=c\\
&d=e+f+g
\end{aligned}
\right.
$$

$$
\begin{align}
a+b&=c\\
d&=e+f+g
\end{align}
$$

$$\frac{\partial}{\partial a}(a+b) = \frac{\partial a}{\partial a} + \frac{\partial b}{\partial a} = 1$$

$$\frac{\partial}{\partial u}uv = u\frac{\partial v}{\partial u} + v\frac{\partial u}{\partial u} = v$$

$$\frac{\partial Z}{\partial X} = (\alpha + \beta + \gamma)(\delta + \epsilon + \zeta)$$


```python

```

bfc0af4e184ea87101230a9568cbc845be0348e1
ipynb
Jupyter Notebook
fast.ai/markdown.ipynb
Rockung/sma
4e2dad5bff698c78fbb4beea1cfe45534ed5ff1c
Apache-2.0
fast.ai/markdown.ipynb
Rockung/sma
4e2dad5bff698c78fbb4beea1cfe45534ed5ff1c
Apache-2.0
fast.ai/markdown.ipynb
Rockung/sma
4e2dad5bff698c78fbb4beea1cfe45534ed5ff1c
Apache-2.0
Qwen/Qwen-72B
1. YES
2. YES