ROC I ft-sided signal Aeu(t)-Beu(t l(-t) Diverges as t→-0 ROC II Two-sided signal, has Fourier Transform Ae u(t)- Beu(t) 2e-t)+c2(-) 0ast→±∝ ROC III: Right-Sided signal Ae u(t)+ Beu(t) () Diverges as t→+∞ROC I: — Left-sided signal. ROC III:— Right-sided signal. ROC II: — Two-sided signal, has Fourier Transform