把它们加起来就得到了函数值。
Add them together and that would give me the value of my function.
它应指向函数值较大的一边。
也就是在什么方向上，函数值不变化呢？
实际上是相同的，函数值为0的点在哪里？
x y It's really the same thing. So, x, y, let's see, where is this function equal to zero?
对每个x和，在高度为函数值的地方描点。
y So, for each x and y, I plot a point at height given with the value of the a function.
这个函数值在别处是无关紧要的。
The values of this function elsewhere are of no consequence.
就二重积分来讲,它是对区域里函数值求总和。
The way we actually think of the double integral is really as summing the values of a function all around this region.
这意味着如果x变化,函数值不会发生一阶变化。
That means when I vary x the first order the function doesn't change.
本文介绍几种常用的求函数值域的方法。
This article presents some usual ways of solving the range of function value.
函数值是有规则变动的。
那么我们只需要知道，线积分正是势函数值的变化。
Then, we just have to, well, the line integral is just the change in value of a potential.
如果你在y轴的方向上移动，函数值将匀速地减少。
If you move in the y direction, it decreases at a constant rate.
每条线都被一个数标出，每个值都代表了一个函数值。
And, each of them has a number next to it which tells us the value of a function there.
通过比较每部电梯评价函数值的大小，实现最佳派梯控制。
By comparing the evaluation function values of the elevators, the optimum dispatch control is realized.
另一种方法是，函数值不变的方向是,是与等值面相切的方向。
The other way to think about it, the direction in which the value doesn't change is a direction that's tangent to the level surface.
而- 1正是这个临界点处的函数值，所以，这是一个最小值。
And minus one happens to be the value at the critical point. So, it is a minimum.
如果使用双字节数据类型作为输入，它就会给出双倍的length函数值。
It gives double the LENGTH function value if double-byte data type is used as input.
如果这个值小于或等于所有其它的函数值，那它就是绝对极小值。
If the value is less than or equal to all other function values, it is an absolute minimum.
提出了一种直接从湍流退化图像中估计湍流点扩展函数值的方法。
A new method is proposed for estimating the PSF (point spread function) values of turbulence from turbulence degraded images.
利用归一公式进行量化递归运算，求出断路器安全总突变隶属函数值。
The total function value of the HVCB can be got through recursion operation with the unitary formula.
iso - quanta是由具有相同目标函数值的点所构成的空间中的一条线。
An iso-quanta is a line in space formed by points with the same objective function value.
在起点取势函数的值，抱歉，在终点取势函数的值，减去起点的势函数值。
OK, so we take the value of a potential at the starting point, sorry, we take value potential at the endpoint minus the value at the starting point.
我们说过简单的竖直区域是x在a与b之间，而y在x的函数值两个值之间。
So, we said vertically simple egion looks like x goes between a and b, and y goes between two values that are given by functions of x.
现在我可以告诉你，它总是，指向更大的函数值的方向，可能半个小时后就会知道为何了。
But let me just tell you immediately to the side, which side it's pointing to it's always pointing towards higher values of a function OK, and we'll see in that maybe about half an hour.
如果想知道是极大值还是极小值，那就只需用常识，或者直接比较各点的函数值？
So, if you want to know if something is a maximum or a minimum, you just have to use common sense or compare the values of a function at the various points you found. Yes?
有这样的函数图像-，当沿着图像上的这个方向变化时，试问函数值变化的有多快？
And, I have the graph of my function — and I'm asking myself how quickly does the value change when I move on the graph in that direction?
这将导致关键字记录为0(但仍然返回匹配的结果)，并且函数值将是记录的唯一组成部分。
This will cause the keyword score to be zero (but the matching documents will still be returned) and the function value to be the sole component of the score.
也就是，如果我给你一个单位向量，试问，我沿着这个方向移动，我的函数值会变化得多快呢？
OK, so if I give you a unit vector, you can ask yourself, if I move in the direction, how quickly will my function change?
也就是，如果我给你一个单位向量，试问，我沿着这个方向移动，我的函数值会变化得多快呢？
OK, so if I give you a unit vector, you can ask yourself, if I move in the direction, how quickly will my function change?
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