At that point it becomes a requirements exercise... do these gateways meet my needs, and if so, why am I continuing down a slower, more costly, more laborious path to the same end goal?
此时一个需求分析问题就出现了……这些网关能否满足我的需求?如果可以的话,为什么还要继续沿着原先那条更慢、更昂贵、更费劲的道路向相同的目标前进呢?
P1 If we have a curve c, from a point p0 to a point p1 then the line integral for work depends only on the end points and not on the actual path we chose.
如果曲线c,起点为P0,终点为1,那么计算所做功的线积分,只与端点位置有关,而与我们选择的路径无关。
Whenever the work that is done - by a force is independent of its path — it's only determined by the starting point - and the end point — that force is called a "conservative force."
不管何时一个力做功,与轨迹无关-,只取决于开始点,和结束点-,这个力被称为,守恒力。
so we're going to use this concept of the path to go from the initial point to the end point.
在处理状态函数时,路径的选取。
应用推荐