Absolute value function

It makes sure vx is positive, using the absolute value function.

它使得vx是正值，用绝对值函数。

On the Theorem of Non derivable Point of Absolute Value Function

关于绝对值函数不可导点的定理

Absolute Value and the Second power of Function

绝对值与二次函数

It is a nodus to solve the derivative of absolute value function.

求绝对值函数的导数是高等数学的一个难点。

The article introduces the application of the research-style teaching method in teaching derivative calculation of two kinds of special function-the power-exponential function and the absolute value function.

本文介绍了研究式教学法在两类特殊函数&幂指函数和绝对值函数的导数计算教学中的应用。

In Reference ( 1), the question of derivation of absolute value function has been solved.

文献[1]解决了绝对值函数的求导问题，本文将它推广到更一般、更普遍的分段函数的情形。

Discussion on the Function of Absolute Value Differentiability

关于取绝对值的函数可微性的讨论

The paper proves a formula, amd solves the problem that absolute value function solve the derivative in the round.

本文证明了一个公式，能较全面地解决绝对值函数的求导问题。

Improves the gray scale differential algorithm and Increase the number of adjacent pixels comparison to increase the absolute value of focus evaluation function and improve the accuracy of the auto-focus. ( 3) Describe an improved auto-focus searching algorithm.

对灰度差分法进行了改进，增加了相邻像素的比较，这样就增大了聚焦评价函数的绝对值，提高了自动聚焦的精准度。

On Several Analytic Characters of absolute value function

关于绝对值函数分析性质的讨论

The non derivable feature of absolute value function f ( x) at a point and the structure of its non derivable points set are discussed.

给出f（x）在一个点不可导的特征性质，并讨论f（x）不可导点集的结构。