Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!psuvax1!psuvm!auvm!SWORD!NBP From: nbp@SWORD.BELLCORE.COM (Nikolaos-John Pronios) Newsgroups: bit.listserv.hellas Subject: re: Quiz Message-ID: <9002110354.AA13978@sword.bellcore.com> Date: 11 Feb 90 03:54:56 GMT Sender: The Hellenic Discussion List Reply-To: The Hellenic Discussion List Lines: 72 Approved: NETNEWS@AUVM Gateway APOPSTOLI: Quiz: 1=sqrt(1)=sqrt((-1)(-1))=sqrt(-1)*sqrt(-1)=i*i=-1====> 1=-1 APANTHSH: 1=exp(j2pi+2kpi) k integer (2k even) sqrt(1)=exp(jpi+kpi), k integer, even or odd Gia non-complex pairnoume k even (zygo) esti wste k=2l, 2lpi=> plhrhs peristrofh, pali stous pragmatikous. H ypo0esh (assumption) einai oti douleuoume se grammh kai oxi se epipedo. An einai ka0aro oti douleueis se migadikous, 0a prepri na pareis oles tis lyseis (k=-inf, 0, inf akeraios) oxi mono tous zygous (even). -1=exp(jpi+2kpi) k integer odd or even (-1)(-1)=exp(j2pi+2lpi)=1, l integer, akomh douleueis ston aksona twn pragmatikwn. sqrt(-1)sqrt(-1)=exp(jpi/2+kpi) exp(jpi/2+kpi) k integer (vale k1, k2 an 0eleis) Se auto to shmeio, douleueis sto epipedo kai oxi se grammh (eu0eia) -------------------------- exp(jpi/2+kpi) exp(jpi/2+kpi) = i * i Edw agnoeis ta -i pou pairneis gia k=odd, pairneis mono k=even, pou keintai ston aksona twn fantastikwn. Etsi auto pou ginetai einai oti eksiswneis ena apo ta dyo apotelesmata pou einai dynata an douleueis sto complex plane, me apotelesma pou pairneis an douleueis ston aksona twn pragmatikwn. En pasei periptwsei, 1=sqrt(1)=sqrt((-1)(-1))=sqrt(-1)*sqrt(-1)=i*i=-1====> 1=-1 ^^^ Ypo0etwntas oti eixes ksekinhsei me migadikous, edw einai to la0os. H isothta den isxyei. ^^^^ 0a mporousa na to valw kai edw, mia kai edw ginetai h metavash apo pragmatiko se migadiko. AN synexizes kanonika, exp(jpi/2+kpi) exp(jpi/2+lpi) =exp(jpi+(k+l)pi) kai gia k+l=odd pairneis 1 gia k+l=even pairneis -1 Auta, elpizw na mhn sas kourasa, Nikos P.