In matlab grader it says i am trying to write a scrip instead of a function.
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f = @(x) (2.*x.^3 + 3.*x-1) .* cos(x) - x;
[bisec_root, n, err] = bisection_method(f, -1, 1, 10E-5, 20)
matlab_root = fzero(f, 1)
x1 = -1: 0.1: 1;
y1 = f(x1);
plot(x1, y1);
function [c, n, err] = bisection_method(f, a, b, tol, N)
c = a;
n = 1;
err = 1;
while err > tol && n < N
x = (a+b)/2;
err = abs(x - c);
if f(a)/f(x) < 0 %get the sign
b = x;
else
a = x;
end
c = x;
n = n + 1;
end
% Output
% bisec_root = 0.43854
% n = 16
% err = 6.1035e-05
% matlab_root = 0.43857
5 Comments
Adam Danz
on 14 Sep 2019
The first non-commented line of your code needs to be,
function [c, n, err] = bisection_method(f, a, b, tol, N)
If this isn't clear, spend some time reading through this page,
Answers (1)
Cris LaPierre
on 23 Sep 2019
Edited: Cris LaPierre
on 23 Sep 2019
The "Solution script not found" sounds like an issue discovered in an update that was rolled out on the 13th. That issue has been addressed. Do you still see this error?
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