/^62 BijHRKoecKaeo OnpedjhMnie 



EP, y — VM (qepni. 3) Koop^nnaniLi iho^kh M y Bt KomopoS npe^nojia- 

 raew-b i;eHinp'b i^HJiHH^pa, h HsoGpaanMx qpeai. 2y yrojii, codnaBAiieMiiîi 

 KpaHHHMH no;ioaLeHiaMH nn^HH^pa, maK* ^mo Mk — Ml-zzr. Oicdh^ho, 

 gmo BejuranHa X BBipasHincfl ^BounHMi» HHmerpajioMi. 4j^ç)</^£?y, BSflniBiM'b 

 Me^^y npe^-fejiaMii, KomopLie o6'5eM;iioni'b Beci. inpeyrojii.HHKTi ACE', cjit- 

 flOBamejiBHO, npe^tjiti wh pascyai^^enin nepeMtHHOÎi j ôy^ym-B o n V^. x, 

 u5o ypaBHeiue npflMoîi EC, no npHHHH'fc yrjia CEA pasHaro 60", ecniB 

 jn: 1/(3). :r; omHOCHinejiBHo ;Re aGcunccBi x, nHmperpajii. fi,OAî^ewh GurnB 

 BSiini'b oimb xzzLO, ^ox — EAzz.-^- h inaEi» 



r 



^ = 4/o /o (pdxdy. 

 Ho maK'b KaK.'B j — a- Cos(f, mo (p ~ arc Cos ~ , no^CMy 



r 



l = ^ f/'j^'^orc Cos l dxdy (1 - I). 

 CAt^OBamejiBHO, bi» cvlaj ^opMyAi. (3) n (4), noxyvm'b 



Onpe^tAeHie bcah^hebi n h*ckojibko CAoat-Hte npe^Bi^ymefi m, yse- 

 jin^Mi» ^Afl y^oGHOcmii pasMtpBi poM6a w. IlycmB Gy^em-L ABCD (nepm. 

 4) amomt ponSi.. Hst hio^kh pa^lycoM-b noAy-UHAHH^pa r (no no- 

 crapoemK), paBHBiM^ BHComt poM6a), oniicBisacMi. KpyroByio ^yry dcb. 

 O^eBH^HO, ^mo noKa neninp^b unAHH^pa Sy^emi» Haxo^^Hinfac/i BHympn 

 cesmopa Abcd^ mo nnAiiH4p'B, npn Bctx^ nojioiReniflX'b cboux-b, neiipe- 

 sitHHO yna^emi» hjih na o^ny nsi» cmopont AB, AD, hah ^a^e na o6t. 

 CA^flOBameABHO MoatHo npHHHniB, ^mo tocao coe^^nHeniu, oniHoc/m^irxcfl 

 ceMy cxy^sïo, 6y^enn> paBHflmBCH ntAoii oKpy^Hocmn, noMHOiiieHHou 

 HA iiAoii;afli» ceicînopa; aiiio iipoii3Be(i^eHie pasno Ecah nsoGpasmi'b 



