HOW TO MAKE A MATLAB CODE FOR SECANT METHOD TO FIND OUT SOLUTION OF NONLENIAR EQUATION

4 . MATLAB CODE FOR SECANT METHOD

hello friends after many days i am coming back...

i hope you all are fine..

now let us start our matlab code for secant method and let us understand each command of this matlab code


% input function for finding root of nonliner equation
% s is stands for system if we are using any variable then we have to specified s that's why.......
a=input('enter function for finding real root:','s');
% a is now enter function by us
f=inline(a)
%inline indicates that when we have to find f(some point) then we can find by using inline function
%enter the first initial guess
x(1)=input('enter first initial guess: ');
%enter the second initial guess
x(2)=input('enter second initial guess: ');
%enter the tolerence up to which u have accuracy required
n=input('enter tolerance of the real root of given function: ');
%initialize iteration as 0
iteration=0;
%for loop for finding value of next point
for i=3:1000
%formula for secant method
   x(i) = x(i-1) - (f(x(i-1)))*((x(i-1) - x(i-2))/(f(x(i-1)) - f(x(i-2))));
   xn=x(i)
    iteration=iteration+1;
    if abs((x(i)-x(i-1))/x(i))*100<n
        root=x(i)
       iteration=iteration
        break
    end
end

NOTE: : after '%' whatever writing that is comment

now write this code in matlab and enjoy this......

and wait for our next post.......comming soon,,,,