Consolidate Newton-Raphson implementations (#10859)

* updating DIRECTORY.md

* updating DIRECTORY.md

* Consolidate Newton-Raphson duplicates

* Rename consolidated Newton-Raphson file

* updating DIRECTORY.md

* updating DIRECTORY.md

* Fix doctest precision

* Fix doctest precision again

---------

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Tianyi Zheng committed 2y ago

b98312ca9f2df491017e189b353e6b382b323eed

Parent: e5d6969

Committed by GitHub <[email protected]> on 10/23/2023, 8:37:17 PM