Error msg in fminbnd
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
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.
0 Kommentare
Akzeptierte Antwort
AL
am 16 Mär. 2023
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 Kommentare
John D'Errico
am 16 Mär. 2023
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.
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Loops and Conditional Statements finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!