Link leads to https://updraft.cyfrin.io/courses/math-basics/numerical-methods which currently (2025-12-10) does not exist.
I found this link in the LLM chat when asking about Babylonian method vs Newton method during a lesson about square root
https://updraft.cyfrin.io/courses/formal-verification/math-masters/sqrt-function-hint :

Nice feature! The LLM chat is very useful! 👍