功能:开尔文函数kelvin bei

格式:kelvinbei(v,z)

说明:一般地,{BesselJ<算式解析\BesselJ>}(v,z)(v,(z*{Exp<算式解析\exp>}(3*π*i/4))={kelvinber<算式解析\kelvinber>}(v,z)+i*kelvinbei(v,z)

关于:{kelvin bei<http://mathworld.wolfram.com/Ber.html.htm>}

例子:

kelvinbei(3+0.12i,-3.6i)//回车后得到如下结果
ans = -1.17256963591597 + 0.096200929978945i