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一种新的积分算法

宋巨龙1;徐晨2

  

  1. (1. 西安石油大学 理学院, 陕西 西安 710065;
    2. 深圳大学 理学院, 广东 深圳 815060)

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-12-20 发布日期:2004-12-20

A new integeration method

SONG Ju-long1;XU Chen2

  

  1. (1. School of Science, Xi'an Shiyou Univ., Xi'an 710065, China;
    2. School of Science, Shenzhen Univ., Shenzhen 815060, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-12-20 Published:2004-12-20

摘要: 提出了一种对复化梯形求积公式改进的新的积分算法,对积分区间的划分,采取由外到内、逐渐细分的划分方法,而不是自左而右的等距顺序划分方法.在划分过程中,依据函数本身的特征随时进行计算,从而降低了计算量,使计算速度提高了3~4倍.

关键词: 积分, 算法, 梯形求积公式

Abstract: A new integeration method is presented, which is an improvement on compound trapezoidal integeration. The interval is partitioned from outside to inside gradually instead of from left to right in sequence. According to the characteristic of the integrand, a sub-interval may be calculated at any moment when it is suitable for calculation. Farther partition is no longer carried out, and hence the amount of calculation is reduced. The illustration shows that the speed of calculation can be commonly increased by 3 to 4 times, and therefore, the method is of goo applied value in engineering.

Key words: integeration, algorithm, compound trapezoidal integeration

中图分类号: 

  • O23