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15. Egal dflE g=-dtr|.. ?t) € il 714 E ^l+ d "Jg q "J +tr}. (+) ^I+ d"Jol 220(Vl.J 4+ d"J 4 czl =- ^l+6}q d.Jg 110[v]E =4.Jtr]. (+) zl49 dg-ol 110[v]olE =dlEql € a'Jq. e) zl,4& 4 4 ql Ag ECI = zl flsE dzluldf. dzl *rl *^IE6l giilql EEI 6I q uI c aJ4. (+) ++ €se+ -H-"Jq +dcg €a+q. (+) f,+ Eg= aB 4dql qlul 4Eg 6Iq ol*ol flg trI =Bflo} a-Jtr|. ("I) €4E dC4 4^4 ddg d.ll 9s. = €zl4l €A.Jq. (+) dill 3e =9zlql ^I+qE dFzI zl+ olzl 4E4l +44 -+ol u),flE .J€tr}. 16. 4+E Zrlelel. Pt) €_e. 4oJol E)=Al uI*91 EuzI gq gltszl a^I6-Jr+. (+) Etr.= +"J6Il. *zluullzl 'Jtr= gq *z1Z tsll=^l zJ4. (+) uI* 4.Jq gE= gq Eol E= + 9l A1 oJtrl. e) €Eol $d6l rC9r qg +E.J +E ql €F ={zl$ r}*;[Ezl 4r].J4. (4) €Et PEol E"l ilEzl a^I+trI. Ft) q+ E={l gol "J+qq il=zJ al}flr}. FD deE ql'Jel ^91^lz} B=J{l ileE t + €s= 4Eqzl ?*=trI. 17. Egal Edol E^lEl= 4?= clE rl *Z 4^16'lI E+lE{g rllEcl. PD zl+el 4u-21q1 ts=21 44 9ltsxl qe oJr+. (r.r) Es. 4ql{l *7171 z} 9ltszl sf, €-ets = .91 €-=.zI gLEzl q"J'Jtr1. ('-) dg ^+1r.l7l AA qltszl 44 9ltsxlE +.J.Jtr}. 18. Eal EEEltrh. zl,r)l -1 -l t=J i e.9alel Se H[lC *EEE4 * Hzll dcd (dg€e ls^u^r 110V) -t -t L: €4 (is€g €ad) ,J 49lil !.gel Eel .$E .E^I -Egel dfl:e1:,1 +F+rl+ oJd a+1:,1 -E--e- - 'I '-1 e+) ela ee g4 eE =Ezl zlE tB srl d{ 4ul ts €s td ilQ x]t+l 4 e 49 4-s d..H €g €C 4olB zl ^l 4s. :1aJ 8 E_.Jajq 4'5+ rll'J d4 es ral 9 -23r-