We need to learn how to find the inverse of a matrix directly.

我们要学如何直接找到一个矩阵的逆矩阵。

youdao

If AX=B, then let's multiply both sides by A inverse.

如果AX=B，在等号两边同时乘以A逆。

youdao

B We just compute: X equals a inverse B.

我们只用这样算：X等于A逆乘。

youdao

So, let's see what the correct answer is, Wakefield and it is, in fact, Wakefield, right, because there's an inverse relationship between how fast a particle is going and what its wavelength is.

所以，让我们来看看,正确的答案是什么，事实上，答案是，因为粒子运动的快慢,与它的波长之间是一个反比例关系。

麻省理工公开课 - 化学原理课程节选

The one thing you want to keep in mind though is that Hertz does not actually mean inverse seconds, it means cycles per second. So, if you're talking about a car going so many meters per second, you can't say it's going meter Hertz, you have to say meters per second.

写成5每秒，或5赫兹,你们要记住的是赫兹,并不等于秒的倒数，它是每秒的循环数，如果你们说,一辆车一秒可以走多少米,你不能说它走了米赫兹。

麻省理工公开课 - 化学原理课程节选

By the same token, inverse TIPS are a deflation play only to a limited extent.

FORBES: Portfolio Protection Just In Case Inflation Never Comes

You can buy some of those inverse ETFs as a hedge to kind of neutralize your position to get you through year-end.

FORBES: 8 Big Picks to Win in Q4 and Beyond

Inverse ETFs offer a way for investors to bet on a fall in an asset class but they may not always deliver such a return over an extended period.

ECONOMIST: The risks created by complicating a simple idea