# Input argument "" is undefined

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Anita on 30 Nov 2011
My problem arises when I run the following piece of code:
theta=[psi;s_u;b];
[theta_to , f_to , cov_to] = maximize(@p_11,theta,2,1,0);
I get this error message:
??? Undefined function or method 'p_11'
for input arguments of type 'double'.
I have made sure that all my functions are in the same library. When I try to call p_ll, I get the following error message:
??? Input argument "theta" is
undefined.
Error in ==> p_ll at 3
psi=theta(1)
The p_ll function looks like this:
function ll=p_ll(theta)
global R N T x y u
psi=theta(1);
s_u=theta(2);
b=theta(3:end);
ll=zeros(N,1);
[S_AR, A]=p_S_AR(T, psi, s_u);
for i=1:N
xb_i=x((i-1)*T+1:i*T,:)*b;
y_i=y((i-1)*T+1:i*T);
ll(i)=log(p_lli(T, R, y_i, xb_i, A, u(:,:,i)));
end
It may be trivial but I cannot find my mistake(s). Does anyone have an idea?

Hin Kwan Wong on 30 Nov 2011
function ll=p_ll(theta)
is p_ll with letter L not number ONE
maximize(@p_11,theta,2,1,0);
you put it as p_11 with number ONE
Anita on 30 Nov 2011
Thank you! It works now.