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The equation for the y coordinate is the height of the building.
坐标的方程是楼的高度
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And then from that start point, get the x-value. Same thing, from that instance, get the endpoint, from that end point get the x-value, square.
取得结束点，然后取得结束点的y坐标，然后求差开平方，然后同样求的y坐标。
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How about the y coordinate?
坐标呢
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And similarly, actually, if we're looking at our polar coordinates here, what we see is it's any place where theta is equal to is what's going to put up on the x-y plane.
类似的，如果我们,看这里的极坐标系，我们能看到只要在theta等于,多少的地方就是ｘｙ平面。
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And so this doesn't know how to do it, it doesn't have a method to deal with it, so it complains.
因为，我原来是期望做什么来着？,我原来是要对x坐标，和y坐标进行对比的。
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OK, for example, I might say point p1 is that list, x is 1, y is 2.
和y坐标的数组是很简单的1,那么，例如，我可能会说点。
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And I originally decided I was going to have as points, it's going to have internal values of an x and a y.
写了一堆代码,然后我以开始决定，是要把值放到点里面的,点有内部的x坐标和y坐标。
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I said both the x- and y- coordinates are bigger, then I'm going to return something to it.
我说过如果x和y坐标，都是更大的。
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I think I wrote this down carefully so I would make sure I did it right.
好，假设实际上这个数组,并不是x坐标和y坐标的表示。
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All right, so I want to have some way of gluing those things together.
好你知道一个点的定义是什么,它有个x坐标有个y坐标。
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This is not an x versus time plot or y versus time.
这不是 x 坐标关于时间的图像,或 y 坐标关于时间图像
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y are these the same?
坐标赋值为4，OK，，now，I，want，to，say，好，现在我想看看？
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For the simplest context in which one can motivate a vector and also motivate the rules for dealing with vectors, is when you look at real space, the coordinates x and y.
对于最简单的情况,我们能用矢量,以及相关的规则来处理的,是实空间,x-y 坐标系
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I mentioned something of increasing importance only later, which is that you are free to pick another set of axes, not in the traditional x and y direction, but as an oblique direction.
后来我又讲了更重要的知识点,你可以随意选取另外一个坐标系,不再是传统的 x 和 y 方向,而是倾斜过的方向
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And I'll give it an x value of 3 3 and a y value of 4.
一个笛卡尔坐标3,然后给p2的x坐标赋值为。
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So I don't know don't, John, I would argue if I'd written this better, I would have had a method that returned the x- and the y- value, and it would be cleaner to go after it that way.
我会去辩论这么写是不是更好，我也可以写一个，返回x坐标和y坐标的方法,这么做可能会更清楚一点，这是很棒的缩写，好。
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x and y are dependent on time.
和 y 坐标都是时间的函数
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For most of us, gravity acts this way, defines a vertical direction very naturally and the blackboard is oriented this way, so very natural to call that x and call that y and line up our axes.
对我们多数人来说,重力作用下,很自然地确定了竖直方向,而我们的黑板又是这个指向的,所以很自然地定出 x 轴和 y 轴,并标出我们的坐标系
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I take the difference in the x-values, squared, the difference in the y-values, squared, add them up, take the square root of that.
好，是毕达哥拉斯定力对不对？,求x坐标的差，然后平方，求y坐标的差，然后平方，把它们加起来，开平方。
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And I think in the polar one I said, if, what did I do there, I said, yeah, again if the x and y are greater than the other one, I'm going to return them to it.
然后我要返回一些值，我认为在极坐标的形式下我说过，如果，我在这里做了什么来着,我说过，对，再说一次，如果x和y坐标。
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And then I've got some things that get me back out information about them.
好，一个模板,对于一个点有x坐标，y坐标,半径，角度。
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And I'm actually going to change it.
看看x坐标和y坐标。
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