The Selfish Giant Oscar Wilde The children used to play in the Giant's garden every day.When Giant came back home after seven years he was very sad and cried in a very grunft voice. He will not allow nobody to play in it but hisself and h built a high wall all round it and put up notice-board. The poor had now nowhere to play. The spring came and all over the country there were little blossoms and little birds. Only in the garden of the selfish Giant it was still winter . One morning he heard solme lovely music the King's musicians were passing by. It was a sight for him that spring came at last. Through a little hole in the wall the chldren had crept in and they were sitting in the brances of the trees. The birds were flying about and twittering with delight and the flowers were looking up through the grass and laughting. Only in one corner it was still winter . In it was standing a little boy. He was so small that he could not reach up to the branches of the tree
If=Uf/Zf 20. Kolmefaasiline kolmejuhiline süsteem kolmnurklülituses mittesümmeetrilise tarviti korral. Kui tarviti on mittesummeetriline (Za ei võrdu Zb jne), siis rikutakse faasipingete ja voolude summeetria. Tarviti liinipinged ab U , bc U ja ca U jaavad samaks tanu generaatori (trafo) suurele voimsusele, kuid neutraalpunkti potentsiaal muutub ning tekib pinge neutraalpunktide vahel.Pinge neutraalpunktide vahel leitakse kahe solme meetodi abil kus A Y , B Y ja C Y on kompleksfaasijuhtivused. Tarviti faasipinged erinevad generaatori (trafo) faasipingetest neutraali nihkumise tottu: Faasi- ja liinivoolud leitakse Ohmi seaduse abil: Generaatori faasipinged A U , B U ja C U moodustavad summeetrilise pingete susteemi. Seejarel joonestame neutraalpunktide vahelise pinge nN U . Neutraalpunktist n lahtuvad tarviti faasipinged a U , b U ja c U . 21
Ma¨ aratud ¨ integraal Kvadratuurvalemid Kvadratuurvalemid ~ Trapetsvalemi ja Simpsoni valemi tuletamisel me noudsime ¨ tapsust madala astme polunoomide ¨ ~ korral kuigi n + 1 fikseeritud solme korral ~ voiksime ~ nouda ¨ Newton-Cotesi kvadratuurvalemi tapsust n-astme polunoomi ¨ korral. Sisuliselt asendasime me integreeritava funktsiooni f funktsiooniga, ~ mis igal osaloigul on kas lineaarne (trapetsvalem) voi ~ ruutpolunoom ¨ (Simpsoni valem) ja integreerisime seda funktsiooni.
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