OK. So, what do I want you to take away from this? This idea of binary search is going to be a really powerful tool. And it has this property again, of chopping things into pieces.

从这里学到些什么？二分查找的思想,是一个非常有用的工具,我重复一遍，把问题拆成几部分来解决,那事实上，这里的增长率是多少？

麻省理工公开课 - 计算机科学及编程导论课程节选

Just go back as often as possible to this formula and work your way from there.

尽量多地复习这个公式,自己多推导几遍

耶鲁公开课 - 基础物理课程节选