function [x, hist] = secant(x, f, tola, tolr)

SECANT This a secant code with no line search.

This code terminates on small relative-absolute errors function [X, HIST] = SECANT(X, F, TOLA, TOLR) Inputs: X = initial iterate

F = function

TOLA = absolute error tolerance

TOLR = relative error tolerance



Output: X = approximate result-function [x, hist] = secant(x, f, tola, tolr)

SECANT　This a secant code with no line search.

This code terminates on small relative-absolute errors　 function [X, HIST] = SECANT(X, F, TOLA, TOLR)　 Inputs: X = initial iterate

　　　　　F = function

　　　　　TOLA = absolute error tolerance

　　　　　TOLR = relative error tolerance



　Output: X = approximate result