Try to imagine-- can you do that or can you not do that?-- try to imagine a round square.
试着去想象,你可不可以这样,试着去想象一个圆的方形
You know, if you're wandering through Harvard Square and you see an out-of-work Harvard grad, they're handing out examples of square roots, they'll give you an example and you can test it to see is the square root of 2, 1.41529 or whatever.
你知道,如果你从哈佛校园里穿过去,你看见了一个失业校友,正在派发平方根的示例,他们会给你一个例子,而你会检查2的平方根是1。41529或者别的什么。
You see the difference in electronegativity, square it, multiply it by one-quarter and raise that to the power e.
你看到了电负性的差异,开方,乘以四分之一,在移到e上去做指数。
The backmost square-shaped chamber of that inner shrine was the inner sanctum or the holy of holies.
神殿最后面的正方形的空间,是内圣所或者说,最神圣的地方。
If you took out somebody's cortex and flattened it out, it would be two feet square, sort of like a nice--like a rug.
如果你取出某人的大脑皮层,把它摊开,会有两平方英尺那么大,有点像一张地毯
It turns out you can list one, give it a name, and if you use square brackets, that tells the compiler I actually want to put multiple values inside of this -- inside of this variable and how do we do that?
结果是你可以列举一个,给它取个名字,如果你使用方括号,那是告诉编译器,在里面我需要许多的值--在这些变量里,我怎么做到的?
It varies with the square of distance so it goes - in order to go twice as far it takes four times as long.
速度是与距离的平方正相关的--,如果要扩散两倍的距离要多花四倍的时间
What the Dutch did--the Netherlands is an extraordinarily small country, and it's the most populated country in Europe, then, per square kilometre, and is now--once.
那些荷兰人...荷兰是一个,非常非常小的国家,也是当时欧洲人口密度最高的国家,如果以每平方公里人口计算,现在也是
He rescued this melody, which was in danger of becoming excessively four-square, by doing what?
他拯救了这段旋律,它原本过于直白了,怎么做的呢
What we want to do now is compute the mean and variance of the portfolio-- or the mean and standard deviation, since standard deviation is the square root of the variance-- for different combinations of the portfolios.
我们现在要做的是,计算这个投资组合的均值和方差-,或者均值和标准差,因为标准差的平方就等于方差-,这对任何投资组合都是一样的。
And what here is just a graph of the 1 s wave function going across some radius defined this way, and you can see that the probability - well, this is the wave function, so we would have to square it and think about the probability.
这里是,1s波函数,沿这个方向的图,你们可以看到概率,这是波函数,所以我们可以把它平方,并想成是概率。
If you want to write it as a vector equation, you want to write it as v square over r minus-- I want to say that it's pointing in the direction toward the center.
如果要写出矢量方程,就应该写成 -v^2 / r,也就是说,方向就向圆心
Square root of 16, and my plot basically shows it crosses at 4 and-- well, I think that's minus 4.
我的图清楚的显示这个函数,在4和-4两个点和x轴交合。
But he said the energy of an X-Y bond is going to be equal to the square root.
但他说XY键的键能,会等于XX键与YY键键能乘积的平方根。
We knew this was trying to do squaring, so intellectually we know we can square -4, it ought to be 16, but what happens here?
我们知道程序是用来求平方数的,那么按理说我们可以来求-4的平方,也就是16,但是程序结果是怎么样的呢?
In a high-level language, square root might simply be a primitive that you can use rather than you having to go over and code it.
一个高级的语言,平方根可能仅仅,只是你能使用的一个基本要素,而不是你需要去编译它。
And it feel like really this is just one of those like games the magicians play in the square where you are literally moving the cups around accomplishing nothing other than confusion - with the audience but-- which may actually be the case-- but, I argue that this is actually better.
看起来这就是一种,魔法师在广场中玩的游戏,在这个游戏中你只是逐个地移动杯子,除了让观众觉得困惑,其实什么事都没做,-但事实又是什么呢-,实际上我觉得不仅仅如此。
to do sqrt, or square root-- no, I'm going to square root use sqrt, that's the name I'm using here-- square root a hundred different places in some piece of code. Without function, I'd have to copy that piece of code everywhere.
让我做一下准备,想象一下我要调用sqrt或者-,不,我会调用sqrt函数,这是我在这里用的名字,我得把这段代码到处复制。
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