1) reciprocal difference quotient
倒差商
1.
On the basis of reciprocal difference quotient, the theory and method for numerical approximation of the rational function are established in this paper.
文章利用倒差商研究了数值有理逼近的理论和方法,证明了有理插值函数的唯一性,并应用该方法求解数值优化问题,建立了直线搜索的计算方案。
2) commercial failures
商业倒闭
3) difference quotient
差商
1.
Through the suitable selection of difference quotient and correction of the one-dimension inaccuracy linear searching,scope of the improved method is extended.
从应用角度出发,首先,将约束变尺度法改进为一般约束条件,通过适当选择差商形式和对一维不精确线性搜索方法的修正,扩大了该方法的适用范围。
2.
Some methods of constructing a new iterative method by means of two auxiliary functions, z = g (x) and u (x) = f (x) eax , and difference quotient are introduced and discussed.
介绍并讨论了利用两个辅助函数z=g(x)、u(x)=f(x)eαx和差商来构造迭代法的几种方法。
4) divided difference
差商
1.
The explicit formula of general divided difference with multiplicity knots;
一般有重差商的显式公式
2.
Considering that derivatives could be approximated by divided differences,two iterative schemes that avoid computing derivatives were obtained.
采用导数可以被差商近似的办法,得到两个多初始点的迭代公式,从而避免了求导数运算。
3.
A recurrent formula for the divided difference expanded coefficients is derived.
推导出了差商展开系数的一个递推公式 ,基于该公式给出了计算差商展开系数的一个新算法 。
5) inverted differential
倒置差动
1.
To resolve the contradiction between the measurement of micro-displace or high-accuracy detecting of micro-vibration of ultra-low frequency and the convenience of building and adjusting, a inverted differential 4f grating demodulation system of laser Doppler is put forward.
为了解决物体微小位移或微小振动的超低频高精度检测与装调间的矛盾,提出一种倒置差动式4f激光多普勒光栅检波系统。
6) Spectrum difference
倒谱差分
补充资料:差商
差商就是因变量的改变量与自变量的改变量两者相除的商。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条