theta

1. The threshold is called theta.: 阈值称为theta。

2. theta, y=1, else y=0.: 当 a >=theta 时y=1，反之 y=0。

3. So there's no restriction on theta.: 在θ上没有限制。

4. With the chain rule, gives me a theta dot.: 根据链式法则，我得到θ点。

5. Notice it's no longer even a function of theta.: 注意，它不再是,关于θ的函数。

6. But, we have the constraint, a equals b cosine theta.: 但是我们有约束条件，a=b*cosθ

7. R Now, v equals omega R, R so that equals theta dot times R.: 现在v等于ω,即等于θ点乘以。

8. So, that means what you're doing is you're fixing the value of theta.: 就是说，要做的是固定θ的值。

9. Well, we do that by figuring out how b depends on theta when a is fixed.: ,算出了b是在a不变的情形下，它是怎样依赖于θ？

10. Plus the potential energy, which is mg times R times one minus cosine theta.: 加上势能，也就是mg乘以R乘以,1/cosθ

11. This number can be larger than zero >0 if the sine theta is larger than zero.: 这个数字可以大于,只要sinθ

12. dxdy Last time I told you if we have dx dy we could switch it to r dr d theta.: 上一次课提到，如果给出,我们可以把它转换为rdrdθ

13. The two flips out, which eats up this two, so I get mg R and then I get a theta.: 这两个没用了，被抵消，所以得到mgR和θ

14. If now we want to know what f prime is, f v/c plus v over c times the cosine of theta.: 若想知道f撇的大小，撇等于f乘以1，then，f，prime，equals，f，times，one,加上,乘以cosθ

15. Now we forced this potential energy... we forced it into being dependent on theta squared.: 现在我们使得势能。,我们强迫它,随着θ的平方而变。

16. So we get 2gl times the sine of theta mu k*cos 2 and the whole thing to the power one-half.: 所以我们得到2gl*sinθ,θ，minus，mu，of，k，times，the，cosine，of，theta,所有项除以。

17. Well, you could call that the rate of change of theta with respect to theta with a constant.: 你可以称之为，保持a不变,θ关于θ自身的变化率。

18. Since there is no acceleration in the y direction, the normal force must be also mg cosine theta.: 既然在y方向上,没有加速度，法向力也等于mgcosθ

19. The velocity of that object as a function of theta is given Rd And I can make you see that very easily.: 物体的速度,和θ的关系是,θ/dt，by，R，d，theta/dt。,我可让你们简单得看。

20. Then this is the component in your direction we call that the radial component which is v cosine theta.: 这是y方向的，组成因素,我们称之为辐射组成,等于vcosθ

21. R And the track has a radius R, and at this moment in time the angle equals theta, and here is the object.: 轨道半径是，在这个时刻,角度等于θ,这是物体。

22. So, we set this to be zero. Theta, well, we are very happy because we want to express things in terms of theta.: 所以我们令它等于零，很好，我们很高兴，因为我们就是想用θ来表示。

23. This is a constant, and so you're going max to get theta equals theta maximum times the cosine omega t plus phi.: 这是不变的,所以得到θ=θ,乘以cosωt+π

24. So it is this component, v cosine theta - which we call the radial velocity-- that is minus 100 kilometers per second.: 这个成分，是vcosθ,我们叫做径向速度-,等于-100，公里每秒。

25. Meanwhile, the anti-X particle decays either to an antineutron or to two "hidden" antiparticles: anti-Y and anti-theta.: 同时，一个反“X”粒子要么衰变成一个反中子，要么衰变成两个未知的粒子：反“Y”粒子和反“θ”粒子。

26. See, this is the same formula as the one over there, just piding everything by partial theta and with subscripts little a.: 这和那边的公式是一样的，只是通过偏θ和下标a把所有的事情分开,如果对你来说用这种方法更容易理解。

27. Say, polar coordinates. Let's say that I have a function but is defined in terms of the polar coordinate variables on theta.: 比如说极坐标，有一个函数,是根据极坐标θ定义的。

28. Or, the other way around, I have a function of x and y and I want to express it in terms of the polar coordinates r and theta.: 反过来，有一个关于x和y的函数,也可以表示成极坐标r和θ

29. So, it is possible to treat -1 as a constant input whose weight, theta, is adjusted in learning, or, to use the technical term, training.: 所以，我们可以把-1看成一个常量输入，它的权系数theta在学习（或者用技术术语，称为培训）的过程中进行调整。

30. So, it is possible to treat -1 as a constant input whose weight, theta, is adjusted in learning, or, to use the technical term, training.: 所以，我们可以把-1看成一个常量输入，它的权系数theta在学习（或者用技术术语，称为培训）的过程中进行调整。

热门分类

英语例句推荐