docs-v2/content/v2.0/reference/flux/functions/math/yn.md

title	description	menu	weight
math.yn() function	The math.yn() function returns the order-n Bessel function of the second kind.	v2_0_ref name parent math.yn Math	301

The math.yn() function returns the order-n Bessel function of the second kind.

Output data type: Float

import "math"

math.yn(n: 3, x: 3.14)

// Returns -0.4866506930335083

Parameters

n

The order number used in the operation.

Data type: Integer

x

The value used in the operation.

Data type: Float

Special cases

math.yn(n:n, x: +Inf) // Returns 0
math.yn(n: ≥0, x: 0)  // Returns -Inf
math.yn(n: <0, x: 0)  // Returns +Inf if n is odd, -Inf if n is even
math.yn(n:n, x: <0)   // Returns NaN
math.yn(n:n, x:NaN)   // Returns NaN