贵刊1998年第3期登载了《严谨思维的解题功能》，文中的例题1命题有误（原题略）．该文作者对此题的解。也并非微粒在B点的速度最小值．其实此题中带电微粒在A点正下方的速度根本不存在极小值．现简要分析如下：带电微粒自A运动至其正下方时：水平分速度经历的时间竖直分速度[ You published the “Solution function of rigorous thinking” in the 3rd issue of your magazine in 1998. The proposition of the example 1 in the article is incorrect (the original title is omitted). The author of this article explains the problem. It is not the minimum velocity of the particle at point B. In fact, there is no minimum value of the velocity of the charged particles directly under point A in this question. The brief analysis is as follows: When the charged particles move from A to just below it: