Newton's method - Wikipedia
en.wikipedia.org › wiki › Newton&In a Banach space. Another generalization is Newton's method to find a root of a functional F defined in a Banach space. In this case the formulation is. X n + 1 = X n − ( F ′ ( X n ) ) − 1 F ( X n ) , {\displaystyle X_ {n+1}=X_ {n}- {\bigl (}F' (X_ {n}) {\bigr )}^ {-1}F (X_ {n}),\,}
Newton's method - Wikipedia
https://en.wikipedia.org/wiki/Newton's_methodIn numerical analysis, Newton's method, also known as the Newton–Raphson method, named after Isaac Newton and Joseph Raphson, is a root-finding algorithm which produces successively better approximations to the roots (or zeroes) of a real-valued function. The most basic version starts with a single-variable function f defined for a real variable x, the function's derivative f′, and an initial guess x0 for a rootof f. If the function satisfies sufficient assumptions and the initial gues…