De AEQUAT. A1.GEBRAICARUM Ere. CO 



Sit etiam aequatio qiiarti gracilis 



a:*-}- A or* 4. B ^ 4, C = 

 ideoque 



A' = r -f. J 4, t 



B' = a r 4- rt' i 4- rt' f 



D' :=cr4- c*^4-c'f 

 sed a = — 1,b — i/ — 1,c = — j/ — 1 ergo 



A' = r^s-\~t 



W = — r + s^t 

 C'= rV'—l _^ __<■/ — 1 

 D' = — rV— 1 _5 4-it\/— 1 



Hinc 



Sed 



er 



rgo 



P. = 8 r « ^- 4 ^' 



P^ = 4 r' 4- 4 J' 4- 4 «■ 4, 48 r 5* f 4- 24 /•• t* 



P. = _2A 

 P, = _3B 

 P^ = 2A'— 4C 



8 /• f 4- 4 5*= — 2 A 



12r'f4-12r5 = — 3B 



4 r'4- 4 i' 4- 4 <'4- 48 r j'« 4- 24 rV = 2 A'— 4C 



Ex duabus prioribus aequationibus habemus 



_ _ 2 A 4- 4 j-. 

 _ 8 



. . 3B 



ideoque 



.0 . 3B 2A4--1J' 



^ Ms 4 



3B 2 A 4. 4 J' 



