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1·Couple of differential equations.

几个微分方程。

2·And let's not even talk about differential equations.

我们不再讨论微分方程序。

3·Some of you may already have solved differential equations.

你们有些人也许已经，解出了微分方程。

4·This is called a normal system of differential equations.

这称为正规微分方程组。

5·So the first thing you do is your write down your differential equations.

所以你要做的第一件事是你写下，你的微分方程。

6·In 1728 Euler gave differential equations for geodesics on surfaces.

1728年，奥伊勒绘出了曲面上测地线的微方程。

7·Similar method may be applied in other types of partial differential equations.

类似的方法还可以用在其它类型的偏微分方程数值解中。

8·And so now we have to solve two coupled differential equations, which is a hopeless task.

我们要解决，两个成对的微分方程，这是无法解决的任务。

9·Calculus and Differential Equations are highly recommended for full understanding of the course.

要完全了解本课程，应必备微积分和微分方程的知识。

10·The overwhelming majority of nonlinear differential equations are not soluble analytically.

绝大多数非线性微分方程是不能用解析方法求解的。