Let's say you have to go through three or four operations to get a final number, well, do it algebraically.

让我们说,你不得不通过3-4个操作,才能得到最终的数，好吧，用代数方法求解。

麻省理工公开课 - 固态化学导论课程节选

Without worrying about the economics of it a second, how would we find that just as a math exercise?

不需要考虑经济学的理论,用数学的方法怎么来求解啊

耶鲁公开课 - 博弈论课程节选