= (I23) = 



(I, i), (1,2). (1,3), (1,4), (i, 5)> (i,<J), (1,7)5 

 ita vt adhuc determinandae relinquantur iftae : 

 (2,2), (2,3), (2,4), (2,5), (2,<5) 

 (3,3), (3,4)5 i5y5)y 

 (4,4)' 



§. 9. Pro his inueniendis fumamus a — x et ^ =r i, 

 pro b autem ordine capiamus numeros, 2, 3 , etc. atque con- 

 fequemur has aequationes : 



(-. 3) V 



(i, 0(3, 1)=: (1,0(2, 2) 

 (1,3) (4, = (i, 0(2,3) 

 (i,4)(5, 0— (i, 0(2,4) 

 (1,5) (5,0 --(1,0 (2, 5) 

 (i,6)(7, 1) = (1,0(2, tf) 



^AQJ^ rz (2, 2) ^ 



CD ^ ' ' B 



A A R S 



DE 

 A A S S 



DE 

 A ARS 



^ = (2, 4) V^ 

 == C2, 5) ^^ 



CD 



A?^==(2, <J)1: 



BC 



C D P 



(2,3) = -^, 



(2, 4) 



(2, 5) = ^ 



S £ P 

 A B S S 

 D E l" 

 R S 



C D P 



(2, (J) zzz 4±2JL , 



B C P 



ficque etiamnunc determinandae reftant formulae (3,3), (3,4), 

 (3, 5) et (4, 4). 



§. 10. Pro his fumatur «=1, c m 2. et ^:zz:3, 4, 

 5 , etc. tum enim prodibunt hae aequationes : 



(1.3) (4, 2) =(1,0 (3,3) ''''''' 



(1.4) (5,2) = (1,2) (3,4) 



(1.5) (5,0 = (1,0(3,5) 



C D E P 



AA (j R S 



C O P 



= (3,3)ip 

 (3,4) 

 (3,0 



D U £ F 



C 



AQ 

 C 



(3.3) = J-i 



(3.4) =^S 



ABC R SS 



E P (i 



JL B R S S 



E P Q. 



(3.0= W' 



Vnica ergo formula rcflat determinanda, fcilicct (4,4), quaeex 

 hac aequatione : (i, 4) (5, 3) — (i, 3) (4, 4) definieturi erit 



enim 



AARS S 

 fi£P 



— (4, 4) ^, ideoque (4, 4) — 



Q2 



ASS 



§. IX. 



