Undefined function 'fsolve' for input arguments of type 'function_handle'

Using Matlab 2013b, I run the code and I get the following error:

Undefined function 'fsolve' for input arguments of type 'function_handle'.

Error in f_FBGtool (line 117)
[Y_solTX,F_f_iter_QEM,exitflag,output]=fsolve(@f_iter_QEM,Vguess,options,p1,p2,...

Error in Main_FBGtool_flows (line 101)
[Tb,comp(i,:),GY(i,:),LHVg(i,:),CC(i,:),EFh(i),EFc(i),X_char(i),...

Calling the function:

%Calculation of main species and T (iteration)
% options = optimset('Display','off','MaxFunEvals',10000,'MaxIter',1000000,'TolFun',1e-7);
options = optimset('Display','off');
[Y_solTX,F_f_iter_QEM,exitflag,output]=fsolve(@f_iter_QEM,Vguess,options,p1,p2,...
    p3,p4,p5,p6,p7,p8,p9,p10); 
if(exitflag<=0)
    fprintf('Error de converg calculando TX en f_iter_QEM=%g\n',F_f_iter_QEM);
    f_avisoerrfsolve(exitflag);

Function definition:

function Fout= f_iter_QEM(Yguess,p1,p2,p3,p4,p5,p6,p7,p8,p9,p10)

Here are some mathematical calculations,

and the output:

Fout=[eQ eWGSR errC errH errO errN];

Thanks for your help

Answer 1

[Alan Weiss]

It sounds as if you don't have Optimization Toolbox installed. You can check by entering

 ver

at the MATLAB command line.

If you have an Optimization Toolbox license but somehow the product is not currently installed, then reinstall. You might want to contact Technical Support.

Alan Weiss

MATLAB mathematical toolbox documentation

[Balasundaram Mohan]

I have the same problem when I am trying to run matlab code in my institute computing facility. I checked for the toolbox. It is available and I am attaching figure of it. Could please help me to sort this problem out?

Or can we load fsolve file separately and try to run and I am using ubuntu terminal to run matlab program ?

The exact command "{Undefined function 'fsolve' for input arguments of type 'function_handle'."

[Walter Roberson]

Balasundaram:

You have the software installed, but not necessarily licensed. What does

which -all fsolve

indicate?