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…
Multidimensional Newton - MIT
web.mit.edu › 18 › wwwMultidimensional-Newton September 7, 2017 1 Newton’s method and nonlinear equations In rst-year calculus, most students learnNewton’s methodfor solving nonlinear equations f(x) = 0, which iteratively improves a sequence of guesses for the solution xby approximating f by a straight line. That