website/content/blog/today-project/index.md

$$
f(a)=f(b)
$$

okay

$$
a^2 - b^2 = (a+b)(a-b)
$$

$$\begin{eqnarray} 
et(t) = \left\lfloor 23 \cdot \left(3 \sqrt[3]{t} + 0.7 \cdot \log(t + 5) \cdot 13 + \frac{t \bmod 86400}{86400} + 11 \cdot \log_2(t) + 17 \cdot  \\
\cdot \sin\left(\frac{2 \pi t}{86400}\right) + 2 \cdot \cos\left(\frac{2 \pi t}{86400}\right) + \left\lfloor \frac{t}{86400} \right\rfloor^2\right) \right\rfloor \bmod 4
\end{eqnarray}$$