MATLAB: Error:Too many input arguments in GA solver

genetic algorithmGlobal Optimization Toolbox

Dear programmers
I need to minimize a single-objective function in ga having two(2) input variables. But the solver is showing an error:Too many input arguments. Please help.
function y = simple_fitness(x)
%SIMPLE_FITNESS fitness function for GA
y = 100 * (x(1)^2 – x(2)) ^2 + (1 – x(1))^2;
  rng default % For reproducibility
  FitnessFunction = @simple_fitness;
  numberOfVariables = 2;
  lb = [-3,-3];
  ub = [3,3];
  [x,fval] = ga(FitnessFunction,numberOfVariables,[],[],[],[],lb,ub);

Best Answer

function y = simple_fitness(x)
y = 100 * (x(1)^2 - x(2)) ^2 + (1 - x(1))^2;
end
rng default % For reproducibility
numberOfVariables = 2;
lb = [-3,-3];
ub = [3,3];
[x,fval] = ga(@(x)simple_fitness(x),numberOfVariables,[],[],[],[],lb,ub);
Now should be working.
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