论文部分内容阅读
王恒信同志的《近似开方法》(载本刊一九八○年第七期)在实际应用上较为方便,是一种可取的方法。但在原理论述和公式推导上存在着严重的概念错误,现愿提出商榷。为了便于论述,先将原文有关内容抄录于下: “近似开方的计算原理,是根据微分概念来的。从图可见,y的平方根是x,而y±Δy的平方根是x±Δx。当某数需要开方时,则设法将其划分为y±Δy的形式。划分的原则是适当地选择y,并尽可能用心算法算出其平
The practical application of the “approximate opening method” by Comrade Wang Hengxin (contained in ISSN 1809) is a preferable method. However, there are serious conceptual errors in the theory and formula derivation, and we are now ready to discuss it. In order to facilitate the discussion, the original text first transcribed in the following: "The approximate square root of the calculation principle is based on the differential concept to see from the figure, the square root of y is x, and y ± Δy square root is x ± Δx. When a certain number needs to be prescribe, try to divide it into the forms of y ± Δy. The principle of division is to choose y appropriately, and try to calculate it as far as possible