PARTICULARLY THOSE OP TWO VARIABLES. 
849 
% 
% 
SB, 
x r 
4K 21 
^ lo gPl3 
4K n 
^ lQ giv 
4K 
■s lo s*v 
~l 1 '■**>.. 
4K 2 
— lo gP 2 
4K 
^ log A. 
4K 
^i l °SP*.r 
5 10 SP1.. 
4 K 2I 
4K 
— ^g P. 
f k slv 
5 10 gpl, r 
^ S1 °gP 2 ,, 
4K . 
^r h SP;r 
and 
^ ; x z\ **+§]«**.. 
+ fp°gP*>- X r+^°gVr.*} 
, 33 M ,..,33,. 
+^!0g2>„ .... OV+^Jog^r} 
• • • j • • ■ > Vr 
X±, x 2 , 
> . . . 3 x } 
(225). 
Product theorem. 
x 
62. We multiply four functions <E> 4>' <J>" <£'" (in which the variables are x lt ... , 
. . , x"\, . . . , and the characteristics are (^ l> “ * *' " ), * * * ), 
respectively, the sums of the four corresponding numbers being all even); 
and ( „/’ 
\ V 1> 
and we find that the product is the sum of 4 r products. Denote such a product by 
5 Q 2 
