Nothing will be showing on plot

% Solve the problem using netwon raphson method

% f(x)=x^10-1

clc;clear

% Start the computation

xo=0.65;

x=xo;

xold=x;

for iteration=1:22

x=xold;

fx =x^10-1;

der_x=10*x^9;

y=fx./der_x;

xnew=x-y;

xold=xnew;

err=abs(xnew-x);

disp([' Iteration number : ' , num2str(iteration) , ' ; The new value of the x is : ' , num2str(xnew), ' ; The error is : ' , num2str(err) ])

plot(iteration,err)

end

Answer 1

[KALYAN ACHARJYA]

xo=0.65;
x=xo;
xold=x;
iteration=1:22;
err=zeros(1,length(iteration));
for i=1:length(iteration)
    x=xold;
    fx =x^10-1;
    der_x=10*x^9;
    y=fx./der_x;
    xnew=x-y;
    xold=xnew;
    err(i)=abs(xnew-x);
    disp([' Iteration number :  ' , num2str(iteration) , ' ; The new value of the x is : ' , num2str(xnew), ' ; The error is : ' , num2str(err) ])
end
plot(iteration,err);

Answer 2

[Rik]

You are plotting single points, without changing the default (where points are not displayed, only the line connecting them). You are also resetting the plot, as you don't use hold.

You should store the results of your calculation in a vector so you can use that in plot.