is going to be just the opposite of 2px So if you said 2 p x the first time, 2py say 2 p y this time.

就和，我们开始说的那个,如果你第一次说，现在就是。

麻省理工公开课 - 化学原理课程节选

I take the time and put it in the y equation and demand that the y I get, agrees with this y.

然后我把时间代入 y 的方程,令得到的 y 的表达式等于这一段的 y

耶鲁公开课 - 基础物理课程节选

If they tend to move together, when x is high and y is high together at the same time, then the covariance will tend to be a positive number.

如果x和y同向变动,当x值和y值同时都很大,协方差的结果将会是一个正值

耶鲁公开课 - 金融市场课程节选

Consequently, for this object the position y, at any time t is known to be 15+10t-5t^.

因此,对这个物体来说,在任意时刻的位移y,就应该为15+10t-5t^

耶鲁公开课 - 基础物理课程节选