Lines 8 and 9 declare x1 and x2.

第8行和第9行声明了x1和x2。

youdao

What is the type for x1 in the Listing 13 code?

在清单13中，x1的类型是什么？

youdao

Such input can be viewed as a vector: <X1, X2, ...

这样的输入可以看成一个向量：<X 1, X 2, ...

youdao

The return on the portfolio is x1 r1 + x2 r2 + x3 r3.

这个投资组合的收益是。

耶鲁公开课 - 金融市场课程节选

x1 The portfolio mean and variance will depend on x1 x1=1 in the way that if you put--if you made x1 = 1, it would be asset 1 x1=0 and if you made x1 = 0, then it would be the same as asset 2 returns.

投资组合的均值和方差取决于1,如果你令，投资组合的均值方差就与第一项资产相等1,如果你令，那么它们就会与第二项资产的参数相等。

耶鲁公开课 - 金融市场课程节选

So, if you're doing physics, x2 work is the integral of force, dx, x1 to x2.

如果你正在干活，功就是力的积分，从x1，到。

麻省理工公开课 - 热力学与动力学课程节选

NASA's Game Changing Development Program, part of NASA's Space Technology Program, funds the X1 work.

ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth

There also are multiple adjustment points, allowing the X1 to be used in many different ways.

ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth

Here on Earth, IHMC is interested in developing and using X1 as an assistive walking device.

ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth