42 lines
667 B
Markdown
42 lines
667 B
Markdown
---
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title: math.jn() function
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description: The math.jn() function returns the order-n Bessel function of the first kind.
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aliases:
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- /v2.0/reference/flux/functions/math/jn/
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menu:
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v2_0_ref:
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name: math.jn
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parent: Math
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weight: 301
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---
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The `math.jn()` function returns the order-n Bessel function of the first kind.
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_**Output data type:** Float_
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```js
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import "math"
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math.jn(n: 2, x: 1.23)
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// Returns 0.16636938378681407
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```
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## Parameters
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### n
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The order number.
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_**Data type:** Integer_
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### x
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The value used in the operation.
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_**Data type:** Float_
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## Special cases
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```js
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math.jn(n:n, x: ±Inf) // Returns 0
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math.jn(n:n, x: NaN) // Returns NaN
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```
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