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bartek27210

metody

Mar 16th, 2017
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0
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Octave 0.26 KB | None | 0 0
  1. x=[0:0.125*pi:4*pi];
  2. y=cos(x);
  3. z=fft(y);
  4. q=0*x;
  5. plot(x,y,x,z,x,q,'k');
  6. xtick=[0 1*pi 2*pi 3*pi 4*pi];
  7. set(gca,'xtick',xtick);
  8. set(gca,'XTickLabel',{'0';'pi';'2pi';'3pi';'4pi'})
  9. set(gca,'fontsize', 16);
  10. legend('cos(x)', ('fft(cos(x))'))
  11. axis([0 4*pi ])
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