Error msg in fminbnd
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Hi all
I an trying to find minimum value of function using fminbnd sing this script
x=linspace (0,6);
y=6*cos(x)+1.5*sin(x);
plot (y);
[xmin,fval]=fminbnd(y,2,4)
But it give me an error mgs as shown, i don't understand what part in my code that have mistake.
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AL
2023-3-16
0 个投票
fun = @(x) 6*cos(x) + 1.5*sin(x); % Define the function
x_min = fminbnd(fun, 0, 6); % Find the minimum within the interval [0,6]
y_min = fun(x_min); % Evaluate the function at the minimum x value
plot(linspace(0,6), fun(linspace(0,6))); % Plot the function
hold on
plot(x_min, y_min, 'ro'); % Mark the minimum point on the plot
hold off
disp(['The minimum value of y is ', num2str(y_min), ' at x = ', num2str(x_min)]);
Try this Once.
3 个评论
nirwana
2023-3-16
John D'Errico
2023-3-16
fminbnd solves for the minimum of a FUNCTION. When you define x as a vector, then create y, as a VECTOR, y is just a list of numbers. It is not a function anymore, so fminbnd must fail.
nirwana
2023-3-16
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