Why do I get Index exceeds the number of array elements (1).

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Maxim Baurov
Maxim Baurov 2020-7-1
回答： bharath pro 2020-7-2
Hello, this is my function
fun = @(x)100*(x(2)-x(1)^2)^2 + (1-x(1))^2;
x0 = 0.5;
A = [1;2];
b = [1;2];
[x,fval] = fmincon(fun,x0,A,b,[],[],[],[],[]);
when I try to run it I get an error, but i dont understand why

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回答（1 个）

bharath pro
bharath pro 2020-7-2
The error is caused because x0 is scaler but the function fun needs a vector ( x(1) and x(2) ). The following code works fine after I changed the dimensions of X0, A and B.
fun = @(x)100*(x(2)-x(1)^2)^2 + (1-x(1))^2;
x0 = [0.5,0.6];
A = [1,2];
b = 1;
[x,fval] = fmincon(fun,x0,A,b,[],[],[],[],[]);

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