Updating Public Docs to include new exponent function in metrics querying (#30342)

* first change for exponent docs

* exponentiation public doc updates

* Apply suggestions from code review

Co-authored-by: Alicia Scott <[email protected]>

---------

Co-authored-by: Alicia Scott <[email protected]>

Author: ouracheal

content/en/dashboards/functions/arithmetic.md

@@ -18,6 +18,12 @@ into this one `abs(sin{*})`:
 
 {{< img src="dashboards/functions/arithmetic/sinus_abs.png" alt="Sinus function with abs" style="width:80%;">}}
 
+## Exponent
+
+| Function | Description                             | Example                 |
+| :----    | :-------                                | :---------              |
+| `pow()`  | Graph the exponent of the metric. | `pow(<METRIC_NAME>{*}, INT)` |
+
 ## Logarithm
 
 ### Log base 2

content/en/dashboards/querying/_index.md

@@ -199,6 +199,24 @@ min(status:error, status:warn)
 
 {{< img src="dashboards/querying/minmax_logs_platform_example.png" alt="Formula example for 'min' showing min count value between two log queries" style="width:75%;" >}}
 
+#### Exponentiation
+
+You can now use the `pow()` function to raise a constant or a metric to the power of another constant or metric. This allows you to model exponential growth or decay. 
+
+Here is an example of how to forecast user growth by applying an exponential growth factor to a prior time window:
+
+```text
+users.sessions{*} * pow(1.1, timeshift(-1))
+```
+
+Here is an example of how to surface anomalies by amplifying value using exponentiation: 
+
+```text
+pow(ping{region:*}, 2)
+```
+
+To use `pow(a, b)`, `a`, and `b` can be constants or metrics. This function is only available on metrics.
+
 ### Create an alias
 
 You can create a custom alias for your data sources to make it easier for your users to interpret the graph results.