Hi everyone, I am currently practicing this method on a simple function, however I keep getting this error and I do not know how to fix it.
Here is my programe:
fplot(@(x)myfun(x),[-10,10]);
alpha = 0.01;
x0 = -5;
% ——-using GD———————-
[x grad] = gradient(alpha,x0)
% hold on
% figure;
fprintf(‘x = %fn’,x);
fprintf(‘grad = %fn’,grad);
% ——————————
function f = myfun(x)
f = x^2+5*sin(x);
end

function [x,grad] = gradient(alpha,x0)
grad = 2*x0+5*cos(x0);
x = x0;
for i = 0:50
x = x – alpha*grad;
if abs(grad(x))< 0.01
break
display(x);
% grad = grad(x);
end
end
Here is the error that I got
Array indices must be positive integers or logical values.

Error in gradient (line 6)
if abs(grad(x))< 0.01

Error in Gradient_descent_1 (line 5)
[x grad] = gradient(alpha,x0)Hi everyone, I am currently practicing this method on a simple function, however I keep getting this error and I do not know how to fix it.
Here is my programe:
fplot(@(x)myfun(x),[-10,10]);
alpha = 0.01;
x0 = -5;
% ——-using GD———————-
[x grad] = gradient(alpha,x0)
% hold on
% figure;
fprintf(‘x = %fn’,x);
fprintf(‘grad = %fn’,grad);
% ——————————
function f = myfun(x)
f = x^2+5*sin(x);
end

function [x,grad] = gradient(alpha,x0)
grad = 2*x0+5*cos(x0);
x = x0;
for i = 0:50
x = x – alpha*grad;
if abs(grad(x))< 0.01
break
display(x);
% grad = grad(x);
end
end
Here is the error that I got
Array indices must be positive integers or logical values.

Error in gradient (line 6)
if abs(grad(x))< 0.01

Error in Gradient_descent_1 (line 5)
[x grad] = gradient(alpha,x0) Hi everyone, I am currently practicing this method on a simple function, however I keep getting this error and I do not know how to fix it.
Here is my programe:
fplot(@(x)myfun(x),[-10,10]);
alpha = 0.01;
x0 = -5;
% ——-using GD———————-
[x grad] = gradient(alpha,x0)
% hold on
% figure;
fprintf(‘x = %fn’,x);
fprintf(‘grad = %fn’,grad);
% ——————————
function f = myfun(x)
f = x^2+5*sin(x);
end

function [x,grad] = gradient(alpha,x0)
grad = 2*x0+5*cos(x0);
x = x0;
for i = 0:50
x = x – alpha*grad;
if abs(grad(x))< 0.01
break
display(x);
% grad = grad(x);
end
end
Here is the error that I got
Array indices must be positive integers or logical values.

Error in gradient (line 6)
if abs(grad(x))< 0.01

Error in Gradient_descent_1 (line 5)
[x grad] = gradient(alpha,x0) machine learning MATLAB Answers — New Questions

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