# 古希臘文

## 數學
$$
\begin{align*}
u(t) &\leq \alpha(t) + \int_{0}^t \beta(s) u(s)ds\\
u(t) &\leq \int_{0}^{t} \alpha(s)e^{\int_{s}^t\beta(\tau)d\tau}ds
\end{align*}
$$

$$\mathbb{R}$$