Can anyone help me to sort the following message error?

My code is :

function FA21May2015

x0=0.1;

omega = 1 ;

tspan =(0:0.1:50);

      x = logisticOscilanalytical(tspan,x0,omega);

       X = @(T) interp1(tspan,x,T);
  f = @(tspan)  ((omega.*cos(omega.*tspan) + sin(omega.*tspan).^2 .* (1- (2.*X(tspan)))).^2./ 2.*sin(omega.*tspan).^4 .* (X(tspan) - (X(tspan).^2)).^2);

t= (0:10:50);

t0 = t(1);

N = length(t);

Aall = zeros(1,N)

JTimeall = zeros(1,N);

         for i = 1:N
             Aall(i) = 1 / t(1,i) - t0 
             F = f * Aall 
             JTime = integral(F,0,t(1,i),'ArrayValued',true);
             JTimeall(i)= JTime ;
         end  

figure(1)

plot(t,JTimeall,'r')

end

% function x = logisticOscilanalytical(t,x0,omega)

% ee = exp((omega)*(1-cos(omega*t)));

% x = (x0.* ee)./((x0+1) - x0.*ee);

% end

The message error is :

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

Error in FA21May2015 (line 19)

F = f * Aall.

I hope to find someone to sort this error please. Many thanks.

Answer 1

[Walter Roberson]

http://uk.mathworks.com/matlabcentral/answers/216668#comment_285954

[Avan Al-Saffar]

Many thanks for your answer. So you mean that I need to write :

F = f(tspan) .*Aall ?

But now I am getting this error( Error using .* Matrix dimensions must agree.

             Error in FA21May2015 (line 21)
                    F = f(tspan).*Aall ;

[Walter Roberson]

F = f(t).*Aall;

Aall was created to match the size of t, not the size of tspan.