Cauchy problem

例句：

1. 1.The Cauchy problem is a classic example of a differential equation that cannot be solved analytically.
   卡西问题是一类无法解析求解的微分方程的经典例子。
2. 2. In the Cauchy problem, we are given initial conditions and we need to find out how the solution evolves over time.
   在卡西问题中，我们被给定初始条件，我们需要找出随时间推移解是如何演变的。
3. 3. The Cauchy problem has applications in various fields such as fluid dynamics, heat transfer, and wavepropagation.
   卡西问题在流体动力学、热传递和波传播等领域有广泛的应用。