( 276 ) 



^ 3 ^ — 2 ?r r — n Vo 1 



D= , ==\tan-^ , ; — 2tot-' -=^== X 1 



X [2 «öH-i f H K ^— ^, ^ _ „ (3 — «2) tau-^ Y ~ '^o 1 

 L \ IC — n-' J x ■ — rri 1 



In the integrations following now wc shall for the present not 

 pay attention to the limits for A (or a-). To simplify the notation 

 I still propose the following abridgments : 



(3) 



p/(l _ a:) {X — h2) =p \/{i—x){x— V4) = p' 



"We then easily find for the five parts of the integral I A ch: 



A^ = 3 «2 fp civ = 3/^. «2 [ ^2 u: — (1 + n") ) p— (l—n~f tan-^ z j 



A, = — ^U n" 14- ''*■ = Vo «2 I — — 2 tcm-^ z + _+^ ia„-i „~ 1 

 J x^ " I X n J 



^3 - 3 « fp' J.r = 3/4 n [(2 .^-Vi)p'-7i6 «««"^ -'] 



Ai= 1/3 «(1-4 «2) |i^cfa= Vow(l-4«'-) |^p'_ryjj„«-V^toi-i 1/2^'] >, (4) 



^5 — _ „3 p! ,-;,, _ „3 f— — 2 tmi-^ z + V2 <««^^ V2 s'l 



as is to be verified by means of the relations. 



dp = - V3 ^ ^ c/..- c/p' = - 1/2 , — ^-^ 



P P 



cZ «an-i 2 = — V2 '' *""~ ^ = — 73 — T 



« '^■'^ , 11/1 M '^^ 



dtarr 1 ne = dtan—^ H%i = — U T 



2 rf-p «ï» 



