诸位,今天这段谈话,内容非常简单,不但很容易了解,并且不至于多费时间。我们的主要目的,只是说明:怎样利用直线线段,去计算平面曲线长度的近似值,怎样利用正方形,去计算平面面积的似近值。我们先说曲线,假定给了曲线(?),要我们求他的近似长度,如果所给的(?)是 All of you, today’s conversation, is very simple. Not only is it easy to understand, but it does not take much time. Our main purpose is simply to explain how to use a straight line segment to calculate an approximate value of the length of a planar curve, and how to use a square to calculate the near-similar value of the planar area. Let’s start with the curve, suppose we give the curve (?), ask us to find his approximate length if the given (?)