导数 The derivative

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1.

But , it's good, at least , to be aware that you can't always take the derivative .

但至少应当意识到，有些函数没有导数。

2.

And when I change x , z changes, and the slope of that is going to be the derivative with respect to x .

这样 x 为自变量，z 为因变量，这条曲线的斜率就是关于 x 的导数。

3.

This research will theoretically concentrate on probing into the specific function of the derivative in the marginal analysis .

本文理论地阐述了导数在边际分析中的具体应用。

www.ceps.com.tw

4.

x So , if I plot the graph of a function , and to have my point x, and here I have f of x, how do I see the derivative ?

因此，如果我画出函数的图像，取一个点，这里是 f ，那么导数是怎样的呢？

5.

I 'm sure you remember some of the simpler rules for differentiation and could quickly tell me that the derivative of x2 is 2x.

我确信你们仍然记得一些简单的规则，并且能够迅速地告诉我 x2 的导数是 2x 。

6.

You know how to integrate a chicken and can take the derivative of water .

你懂得如何对一只鸡进行积分，也能求出水的导数。

7.

So the derivative in any direction , tangent to g equals c, should be the directional derivative of f , in any such direction, should be zero .

所以这个与 g=c 相切的导数，应该是 f 的方向导数，在这个方向下，应该是等于 0 的。

8.

In calculus , the derivative equals zero or does not exist at a function 's minimum point .

在微积分中，在函数的极小值点上导数等于零或者不存在导数。

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