Ceres.js is a javascript port of the Ceres solver. Ceres Solver is an open source C++ library for modeling and solving large, complicated optimization problems. It can be used to solve Non-linear Least Squares problems with bounds constraints and general unconstrained optimization problems. It is a mature, feature rich, and performant library.

Here, some methods for solving nonlinear equations, offering a collection of solvers including Bisection, Newton-Raphson, Secant, Fixed Point Iteration, and Newton's Method with Multiple Roots are found. These numerical techniques provide versatile and efficient approaches to finding solutions for nonlinear equations