求贝塞尔函数的0到无穷定积分

pgx0203

我的这个贝塞尔函数积分,它是零阶第一类和第二类,我已经用解了好多天,没有解决,还请你施以援手,小弟再次谢过.
q=(0.001,0.002,0.003,0.004,0.005,0.006,0.007,0.008,0.009,0.01,0.02,0.03,0.04,0.05,0.06,0.07,0.08,0.09,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.9,1,2,3,4,5,6,7,8,9,10,20,30,40,50,60,70,80,90,100,200,300,400,500,600,700,800,900,1000);
  r=(1,1.5,2,2.5,3,4,5,6,7,8,9,10,15,20,25,30,45,50,60,70,80,90,100);
f=((besselj(0,x)bessely(0,x*r)-besselj(0,x*r)bessely(0,x))*exp(-q*x^2))/(x*((besselj(0,x)^2+bessely(0,x)^2)),
要求其在０到无穷的定积分，

[ 本帖最后由 eight 于 2008-4-21 21:32 编辑 ]

sogooda

不会，建议找本数学物理方法方面的书看看，或许会有帮助。

qingqing5638

你后来是怎样处理的啊，可以用符号积分但是他肯定说精确值找不到，你可以用数值积分，找一个大数，然后再找大数的两倍，让两次的结果在你的精度范围之内。