plotting userdefined function

[Andrey]

Hello!

I try to plot userdefined function, but on screen only horizontal line at
50.
What is wrong with my function?

%==========================================
function ua = fnUA(x)
      if x > 0.03
        ua = 50*sin( 2*3.1415*50*x );
      else
        ua = 50;    
     end;   
endfunction

x=[0:0.0001:0.09];
plot(x, fnUA(x));
%=========================================

Thanks.






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