% ============= %
% SECANT METHOD %
% ============= %
% Find the roots of using Secant Method
% func --> function is taken by user
% like sin(x) or x^2 + x - 1 or any other but use the same format
% i.e. use paranthesis as used above with 'x' for sin, cos,... etc
% and spacing between '+' or '-' operation
% a --> Xn-1
% b --> Xn
% c --> Xn+1
% maxerr --> Maximum Error in Root
syms x;
func = input('Enter Function in terms of x: ');
a = input('Ener Lower Limit: ');
b = input('Ener Upper Limit: ');
maxerr = input('Enter Maximum Error: ');
f = inline(func);
c = (a*f(b) - b*f(a))/(f(b) - f(a));
