binomial formula

In the paper, on the basis of the binomial productivity general formula, the change law of the binomial coefficient "B" is theoretically derived in consideration of the investigation radius and its corresponding permeability change.

文章基于气井二项式产能方程通式，考虑探测半径及对应渗透率的变化，从理论上推导了二项式系数B的变化规律。

Non-Darcy binomial deliverability testing formula of horizontal gas wells

气藏水平井非达西流动二项式产能试井公式

Based on the differential factor approach, several practical transformation formulae between plane coordinate systems together with their application areas are proposed in this paper. These formulae are: improved power series formula, Taylor series formula, and Newton's binomial formula.

本文利用微分算子的方法，提出了坐标系统转换的几种实用公式，即：改进幂级数公式、台劳级数公式、牛顿二项式公式及应用范围。

In this paper, some especial higher power equation be enumerated, just like Binomial equation or Reciprocal equation, for people cannot fine common extract roots formula about five and above power equation.

基于五次或五次以上方程没有一般通用的求根公式，本文列举了一些特殊的高次方程的解法。

Three methods-structural volume, binomial formula and definite integral-can be employed to derive the formula for the snm of the K power of positive N term integer. The calculation can be made on the basis of them.

用构造体积、应用二项式定理、利用定积分的三种方法，导出正整数前n项k方和公式，并对此进行推算。

This new formula is complementary with the classic CRR binomial option pricing formula and completes the binomial model.

比较分析了二项式期权定价量子模型新公式与经典CRR定价公式，指出此两者是互补存在的，有着各自不同的适用范围。