运动与静止是事物状态的两个方面 ,两者的相对性不仅在物理学中有广泛的应用 ,在数学中也有意想不到的妙用。如解题时 ,我们可以通过虚拟静止前的运动将图形移形换位 ,化一般为特殊 ;也可以通过寻找运动过程中将要到达的相对静止状态 ,以静制动 ;或者采用动静互补、互易 ,转换 Movement and stillness are two aspects of the state of things. The relativity of the two is not only widely used in physics, but also has unexpected and magical effects in mathematics. For example, when solving a problem, we can use the motion before the virtual motion to shift the position of the figure to be a special one. It can also be used to find the relative static state that will be reached during the movement to stop it statically; or to use complementary actions and mutual actions. Easy, conversion