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σηματα και συστηματα-i

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du()<br />

t<br />

δ () t =<br />

dt<br />

ΧΡΟΝΙΚΕΣ ΜΕΤΑΤΟΠΙΣΕΙΣ<br />

u(t+2)<br />

1<br />

0.8<br />

0.6<br />

0.4<br />

0.2<br />

-5 -4 -3 -2 -1 1<br />

u(t-2)<br />

1<br />

0.8<br />

0.6<br />

0.4<br />

0.2<br />

-4 -2 2 4<br />

δ ( t + 2)<br />

1<br />

0.5<br />

-4 -2 2 4<br />

-0.5<br />

-1<br />

2

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