Newton' method function?


I have to find the roots for a function with a singular real variable - for that I would use newton*s method, but I can’t find somthing in the root documentary:

This post speaks about a TUtils class, but the reference guide wasn’t able to show me more information.

Am I just to stupid to find it, or is it not implemented yet?


In case other people are searching for the same:
The answer seems to be this function.