matlab export and insert images

[Uwe Brauer <oub@mat.ucm.es>]

Hello

The following code 
#+begin_src matlab  :results output  :exports results :eval never-export :wrap latex
x=[0:0.1:1];
y=sin(x);
plot(x,y);
print -dpng  lestablenix.png 
#+end_src

#+CAPTION: Results of the finite difference scheme.
#+NAME:   fig:lestablenix
[[./lestablenix.png]]

Inserts in the org buffer the png image, just as I want it, however it
also inserts the part 

#+RESULTS:
#+begin_latex
>> y=sin(x);
>> plot(x,y);
>> print -dpng  lestablenix.png 
#+end_latex

Which I don't need. 

So the question is, how can I insert the image without obtaining the
begin_latex stuff.

Thanks

Uwe Brauer