'Happiness' is a derivative of 'happy'.
happiness是happy的派生词。
我会计算时间导数。
And then we take the derivative.
然后求导。
And, not every function has a derivative.
不是每个函数都有导数。
“导数”又是什么？
Can you tell me what a derivative is?
你能告诉我衍生产品是什么吗？
Derivative works are far more complicated.
派生作品更加复杂。
So we get rid of this derivative of g.
所以我们就消掉了G的微分。
The language is a derivative of plain Rexx.
此语言派生自普通的Rexx。
Just taking the derivative in the usual way.
以通常的方式求导。
In a contract, that became known as a derivative.
在一个合同，这也成为知名的衍生。
So, what does the second derivative test say?
那么二阶导数判定是怎样的呢？
And then, what's the derivative in that direction?
那么，那个方向的导数是什么呢？
Derivative images available under the same license.
衍生图像以同样授权提供。
And I can take now the first derivative of this.
现在得到第一个推导式。
The second derivative, they say, is turning positive.
他们说二阶导数转为正值了。
OK, so that's the definition of a partial derivative.
好的，那就是偏导数的定义。
And all we did, further, is take that second derivative.
总而言之，我们所做的就是求二阶导数。
And that is an approximation for partial derivative.
这就是偏导的近似值。
So, it's the second derivative of a position vector.
它是位置向量的二阶导。
That's the first derivative of the position versus time.
它就是位置，对时间的一阶导数。
Now, if we compare these two, we will get the derivative of h.
比较这两个，我们会得到h的导数。
，pressure，up，here，is，a，derivative，of，A，with，respect，to，volume。
You can get thepressure from the fact that the p So you take thederivativeofAwithrespecttovolumehere.
But, we can still ask, is there a derivative in every direction?
但我们仍想问，是否在每个方向上都有一个导数呢？
So, you might think acceleration is just the derivative of speed.
你们可能认为，加速度只是速度的导数。
Well, it's actually the directional derivative in that direction.
它其实是那个方向的方向导数。
We cannot use second derivative tests or anything like that.
我们不可以用2阶导数来观察或者别的什么方法。
Any derivative work, then, gets the benefit of the patent license.
任何衍生产品都因此得益于此专利许可证。
Well, it is given by the derivative of this with respect to u.
它由对u的偏导给出。
Well, it is given by the derivative of this with respect to u.
它由对u的偏导给出。
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