8 A. MAPKOM>. 



^yHKnJH f(t, z) onpeAtjiaeTCfl Tpeiua nepBbiMH qjienaMH npaBOH qaern *opMyjibi 



(9) Y^7) = *»-*- ^ z •*• *** -+"• • • ■-+■ <V" ■+-•••■: 



npocToe yMeoateHie paAa, eroamaro bt, npaBoii qacTn ^opiuyjibi (9), Ha F(t, z) Aaerb Haiu-b 

 f(t, z) = %-*- (4>, — A%) * + (% — A^ -+- £<i> ) z\ 

 ,ZI,jih Hauiefi ufan BaaKHo 3aMiTHTb, qro npn t = 1 bcb 4>yuKuin 3> n aojijkhm upHBOAHTbca 



KT> eAHHHEl'E H CJI'EAOBaTeJIbHO 



f(l,z) 1 



(10) 



F(l,*) 1— « 



§ 3. HaRAeHHbia <i>opMy.ibi Mhi npjuoJKHM'L kt> BbiincJieHiw MaTeiwaTHqecKnxt ojKHAaHiii 

 pasjin^HbiXTb cTeneHefi cyMMbi 



x x -+- ic 2 -♦-.... -+- x n — na, 



iipn qe»n> hhcjio a noAoepeurb TaKHMi. o6pa30Mi>, qxo6bi MaTeiuaTHqecKoe oJKHAaHie uepBoii 

 CTeueHH 3toh cyMMbi odaBajiocb KOHe t rabiM'b npn 6e3npeA'feJibBOMi B03pac r ramH qacia n. 



TaKi. KaKi> bt> *yHKn,in 4> n , corjiacHO onpeAtjiemK) en, KosixwmieHTOM-b iipn jho6oh 

 AaHHofi creneHH t oiyacHTb BipoaTHocTb, mto cyMMa 



paBHa noKasaTejiK) stoh CTeueHH, to BspoaTHOCTb, qro cyiuiua 



x 1 -t- % 2 -t- . . . . -t- x n — na 

 paBHa AaHHOMy qaoiy, mm MoateM-b onpeA'fejinTb pa3JioJKeHieM'b no CTeneHaM-b t npon3BeAeHia 



KaKi> K03**nn,ieHTi bt> stom-b npoB3BeAeHin npa toh CTeneHH t, HOKa3aTejib kotopoh paBem, 

 AaHHOMy iHCJiy. 



OTCWAa He TpyAHO 3aKJHoqnTb, qTO MaTeMaTnqecKoe oasnAaHie 



(as a ■+-«,-+- -*-x n — na)\ 



