I have this code but I want to add each of my values of xn into an array then plot these on a graph. How would i do this?

Question

Lewis Harrington 2019-11-18

评论： Lewis Harrington 2019-11-18

a = input('Enter a value for a');

e = input('Enter a maximum error');

xn = input('Enter a starting value');

y=1;

while abs(y)>=e

xn=(xn+a./xn)./2;

y=xn.^2-a;

end

disp(['The estimated value of the square root of a is: ', num2str(xn)])

ra=sqrt(a);

disp(['The actual value of the square root of a is: ', num2str(ra)])

Answer 1

KALYAN ACHARJYA 2019-11-18

编辑：KALYAN ACHARJYA 2019-11-18

Do array indexing inside while loop

likewise

% Define i=1;
% also define y(1) and xn(1)
while condition
xn(i)=(xn(i)+a/xn(i))./2;
y(i)=xn(i)^2-a;
i=i+1;
end

After that xn and y become vectors, do as you wish (plot).

Hopefully, these are enough clues to resolve the issue.

Lewis Harrington 2019-11-18

How do i add the element into an array for each loop?