I need to maximize the objective function y = exp(x) using 'fmincon' and a -ve sign in the objective function.I have used upper & lower bounds of x as 300 and 400. When I run with y=exp(x), I get the error: Maximum number of function evaluations exceeded;

` increase OPTIONS.MaxFunEvals.`

When I run for y = exp(-x), I get the error:

Optimization terminated: first-order optimality measure less than options.TolFun and maximum constraint violation is less

` than options.TolCon.Active inequalities (to within options.TolCon = 1e-006): lower upper ineqlin ineqnonlin 1`

The code is :

function xout = s1

%—————————optimization——————-

x0 = [300]; % Just some Initial Condition

ub = [400]; % Upper bounds

lb = [300]; % Lower bounds

F = @(x) obj(x);

xout = fmincon(F,x0,[],[],[],[],lb,ub); %optimization operator

function obj = obj(x)

y = exp(x)

obj = -y

end

end

Please help me as to how I can remove this error. Thanks.

## Best Answer