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。
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。
Funny story, I met him because at MIT they signed us all up for chest x-rays alphabetically-- that's the way MIT does things, an orderly way.
有趣的是,我在MIT遇到他是因为,我们按姓氏字母顺序,排队去照胸透,MIT做事总是用这种有条理的方式
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