[ 459 ] 
9, Hence, in two quantities, r the greater, p the 
lefs. 
Putting A=2yNj B=AN% C=BN*> 
D=:C'N^&c. 
And S== A + 4.B+ ;C + |P, &c. 
Then L, 1 = S j Or R — P == S. 
P 
Or, putting N = ^ ; A =r /'N, 6cc. 
Then L, — — 2 S. 
P 
Where ^ — i j N — - ~ - ; let A — 2 y~N, 6cc. 
Then L, r = S. 
Or, in this cafe, puttingN— Aj B— AN% &c. 
Then L, r = 2/S. 
Where p=i, and f~i : let A= 2N, &c. 
/• + 1 
Then L, r S. 
I 
N n n 2 
10. la 
