I'm not going to tell you what you want to do except to say, you would never pick a point below the minimum variance portfolio, right?

我不是教你怎样去组合，当然了，你不会选择一个,曲线上最小方差点以下的资产组合，对吧？

耶鲁公开课 - 金融市场课程节选

How do we get the minimum?

怎么得到最小值？

麻省理工公开课 - 固态化学导论课程节选

So I differentiated this object, this is my first derivative and I set it equal to 0 Now in a second I'm going to work with that, but I want to make sure i'm going to find a maximum and not a minimum, so how do I make sure I'm finding a maximum and not a minimum?

这样我就对它求出导数了,这是一阶导数,令它等于0,一会我们就要计算了,但我先确定一下是最大值还是最小值,我怎么确定是最大值还是最小值呢

耶鲁公开课 - 博弈论课程节选