Show me a place where that's not true where the tangent line will be really bad.

请给我个这个原则不对的例子,也就是说切线没起到相应作用的例子。

麻省理工公开课 - 计算机科学及编程导论课程节选

If we want to add that asset to the portfolio, what it does is it produces an efficient portfolio frontier that is now a straight line; I show that on the diagram.

如果我们将其加入到投资组合中去，则会生成一条资产组合的有效边界,即一条直线;,我在图里把它画出来了。

耶鲁公开课 - 金融市场课程节选

If you go and work that out, log2 log of two and you have two log two, by math you can show that for the line r series m 2*log2 is equal to two natural log of two, which is 1 1.386 which is greater than one.

如果你把它计算出来，这二者的对数，你会得到2个，通过数学，你会得到第r列，第m个值,等于,也就是1。386，这大于。

麻省理工公开课 - 固态化学导论课程节选