但是，当我不想替换的时候，我可以先求导数。
And when I don't really want to actually substitute arctangents everywhere maybe I would rather deal with the derivatives.
微积分中求导数为已知函数之函数的过程。
In calculus, the process of finding a function whose derivative is a given function.
微积分中求导数为已知函数之函数的过程。
To calculate the derivative or differential of (a function).
具体求解方法可归结为求导数、求解微分方程或求积分。
The concrete solving process can be reduced to finding derivative, differential equation or integral.
对具有多重极点的有理函数，本文给出了部分分式展开的实用算法，该算法不需求导数值。
This paper gives a practical algorithm for partial fraction expansion of a rational function with multiple poles without derivative evaluation.
可在不进行求导数运算的条件下，通过区间运算获得作战效能随武器装备的技术战术性能和作战使用方式改变而变化的情况。
The method can be used to obtain the change of operational effectiveness with technical performance of weapon system and the operation mode without using operations of partial derivatives.
然后介绍了一种新的基于指定输入—输出空间的迭代学习控制思想，它即不需要对误差信号求导数，也不需要知道被控对象的对偶映射。
Then introduce a new theory of ILC based on prescribed input-output subspace, it requires neither derivatives of the error signals nor dual mapping.
我们再求一次导数，也就是对导数求导。
Let's sneak in one more derivative here, which is to take the derivative of the derivative.
和以前一样，它来源于这样一个事实，混合二阶导数，求导次序改变，结果不变。
And, as before, this comes from the fact that the mixed second derivatives are the same, no matter in which order you take them.
还记得吧，对一个量的平方求导，就得到这个量的2倍，乘以这个量的导数。
Remember, we take the derivative of the square. We take twice this quantity times the derivative of what we are squaring.
求由参数方程所确定的函数的高阶导数，提出了一种较为直观、简便的逐次求导方法。
Author presented a concise gradual derivation about higher derivative whose function defined by parametric equation.
证明了一条幂指函数的求导法则，并总结了幂指函数导数计算的常用方法。
The paper gives a derivation rule of the power exponential function and analyzes some common calculation methods.
利用混合物的波谱除以干扰组分的波谱得比值波谱，对波长求导得比值导数波谱，由此可消除干扰组分的吸光度叠加效应。
The derivative ratio spectra is found by derivation of the ratio of the spectra of compounds in a mixture to the spectra of the interfering component against the wavelength.
通过对两个求导例题的分析，归纳出求函数在某些特殊点导数的新的解法定理及推论，并举例说明它们的应用，最后对此求导方法进行总结。
Through analyzing two examples of seeking derivative, new theorem and deduction for solution to some functions derivation under the special condition are concluded, and examples are shown.
通过对两个求导例题的分析，归纳出求函数在某些特殊点导数的新的解法定理及推论，并举例说明它们的应用，最后对此求导方法进行总结。
Through analyzing two examples of seeking derivative, new theorem and deduction for solution to some functions derivation under the special condition are concluded, and examples are shown.
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