go Yn()
math.Yn()方法语法
func Yn(n int, x float64) float64
go源码对Yn()方法的介绍：
Yn returns the order-n Bessel function of the second kind.
Special cases are:
Yn(n, +Inf) = 0
Yn(n ≥ 0, 0) = -Inf
Yn(n < 0, 0) = +Inf if n is odd, -Inf if n is even
Yn(n, x < 0) = NaN
Yn(n, NaN) = NaNgolang标准库模块中math.Yn()方法，可返回参数x的n阶的第二类贝塞尔函数。除此之外，Yn(n, +Inf) = 0；Yn(n > 0, 0) = -Inf；Yn(n < 0, 0) = +Inf if n is odd, -Inf if n is even；Y1(n, x < 0) = NaN；Y1(n, NaN) = NaN。
math.Yn()方法实例代码
func main() {
var yn float64 = math.Yn(3, 996)
fmt.Println(yn)
}运行go文件，得到输出：
-0.01988114079135219