# pdfF {#pdfF}

## Syntax {#Syntax .section}

`pdfF(numeratorDF, denominatorDF, X)`

## Arguments {#Arguments .section}

**numeratorDF** is a numeric scalar representing the degrees of freedom for the numerator.

**denominatorDF** is a numeric scalar representing the degrees of freedom for the denominator.

**X** is a numeric scalar or vector representing the points at which to compute the probability density.

## Details {#Details .section}

Calculate the probability density of the specified F distribution at *X*.

Its functionality and usage are the same as `scipy.stats.f.pdf`.

## Examples {#Examples.1 .section}

``` {#codeblock_vb5_sqr_z1c}
pdfF(numeratorDF=2, denominatorDF=19, X=[1,2,3])
// output: [0.34963122778983,0.134514942963846,0.056045754350634]
```

**Parent topic:**[Functions](../../Functions/category.md)

