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所谓物理极值,是指某个物理量在某个物理过程中可以达到的极大值或极小值.相对来看,极值问题大都比较复杂,是学生普遍感到困难很大的一种题型,本文拟分析一例.
The so-called physical extremum refers to the maximum or minimum value that a certain physical quantity can reach in a certain physical process. Relatively speaking, the extremum problem is mostly complicated and it is a kind of problem that the students generally feel very difficult. This article is intended to analyze one case.