出典:Wikipedia
出典:『Wikipedia』 (2011/07/25 15:26 UTC 版)
In numerical analysis, the secant method is a root-finding algorithm that uses a succession of roots of secant lines to better approximate a root of a function f. The secant method can be thought of as a finite difference approximation of Newton's method. However, the method was developed independently of Newton's method, and predated the latter by over 3000 years.