# tf.raw_ops.Polygamma

Compute the polygamma function \\(\\psi\^{(n)}(x)\\).

#### View aliases


**Compat aliases for migration**

See
[Migration guide](https://www.tensorflow.org/guide/migrate) for
more details.

[`tf.compat.v1.raw_ops.Polygamma`](https://www.tensorflow.org/api_docs/python/tf/raw_ops/Polygamma)

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    tf.raw_ops.Polygamma(
        a, x, name=None
    )

The polygamma function is defined as:

\\(\\psi\^{(a)}(x) = \\frac{d\^a}{dx\^a} \\psi(x)\\)

where \\(\\psi(x)\\) is the digamma function.
The polygamma function is defined only for non-negative integer orders \\a\\.

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| ## Args ||
|---|---|
| `a` | A `Tensor`. Must be one of the following types: `float32`, `float64`. |
| `x` | A `Tensor`. Must have the same type as `a`. |
| `name` | A name for the operation (optional). |

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| ## Returns ||
|---|---|
| A `Tensor`. Has the same type as `a`. ||

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