220 A. M\\kho])Rdhj!ij— Elliptic Functions and Mean Values. [No. 2, 



Again, 



-X2)2(A2-J2;2(X2-c2)2 



= ~T« I -i r. [7( = X2. 



= -8^ (^JJ_, 



5^0 

 "16" 



J a (a2- 



X2)2(XS-62)2^X2-c2) 



(19) 



* J a X(a8-X^2(X2-c2)^' 



_ is r*^^ dV) r 1 



, _1 



= ^cL^^'^ 1— — M 1 



