MATLAB: Trying to create a function to approx the sqrt of a number using this approximation

approximationMATLAB

I have been trying to figure out this problem for a few hours and I cant seem to progress any further. I would greatly appreciate any help that could be provided in fixing my code.

My code wont post correctly so i will screenshot what i had.

http://prntscr.com/a7wsg6

Best Answer

You have to define n before you use it.

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clc
clear
a = input('number ');
x = input('guess ');
tol = 0.0000001;
n=x
while (abs(n-x)<=tol)
y=(1/a)*x^2;
n = ((x/8)*(15-(y)*(10-3*(y))));
x=n;
end
disp(n)

Best Answer

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