Not enough input arguments

My code is:

eq=@eqq;
CF=@(u,t, eq)(eq(u,q44, t, t1)*1000*eq(u,q44, t, t1) + u'*1*u);
J=integral(CF,0,T);

where eqq is handwritten function in separate file:

function eqq1 = eqq(u,q44, t, t1)
tdif = intmax;
ideal = 0;
for i=1:length(t)
if (tdif>abs(t(i)-t1))
    tdif = abs(t(i)-t1);
    ideal = i;
end
eqq1 = q44(ideal);
end

after running my code, I get error in line

CF=@(u,t, eq)(eq(u,q44, t, t1)*1000*eq(u,q44, t, t1) + u'*1*u); 

It says that error is following:

Not enough input arguments.

Error in costfunctionalone>@(u,t,eq)(eq(u,q44,t,t1)*1000*eq(u,q44,t,t1)+u'*1*u)

How to solve that problem?

[James Tursa]

eq is the name of the built-in element-wise "equals" operator in MATLAB. I would strongly advise you pick a different variable name.

Answer 1

[Adam Danz]

The integral function integrates your function from u=0 to u=T but you never provide values for "t" or "eq" which are the 2nd and 3rd inputs to your function CF.

Follow this example to numerically integrate a parameterized function.

It will look something like this:

J=integral(@(x)CF(x,t,eq),0,T);

where t and eq are constants you provide as the 2nd and 3rd inputs to CF().