Then, once we did that we could plug that into the formula that I gave you last time and get the standard deviation of the portfolio and the expected return on the portfolio.

再将估算出的数值代入到,上节课给你们的公式中,就能得到资产投资组合的标准差,和该投资组合的预期收益率

耶鲁公开课 - 金融市场课程节选

If you solve for that, you find y-y0=v0^/, and if you put in the v_0 I gave you, which was what, 10?

如果你解这个式子,你会得到y-y0=v0^/,如果再把我给你的v0代入,那个数是多少 10

耶鲁公开课 - 基础物理课程节选

They come from writing i prime and j prime in terms of i and j, then sticking it in an expression and identifying the new representation.

写出用 i 和 j 来表示 i' 和 j' 的式子,再代入分量的表达式,就能得到新的式子

耶鲁公开课 - 基础物理课程节选