In qiM acqualionc diiplicis gcncris tcrniini occurriint: altcri 

 abfoluti, altcri vcro pcr cof. 2 r, atfcdi , qiios ergo feor- 

 fim intcr fc acquari conuenit. Ex tcrminis igitur ablb- 

 lutis orietur 



— fl « n =1 — J!L 4- 1 rt , fiuc ;; « zr T — 1 1 



vnde fit ^ —«;; + ; ; at altcri tcrmini , pcr cof. 2.y\ diuifi, 

 praebcnt 



- 4 fl a (;; - i)' - ann (a -\- £ (3) = '-^ + ' a, ^i^ie 

 4-a (« - I}' + n ;; (a -i- 2 (3) -V- -^ = - '-,r. 



§. 25. Trcs igitur adcpti fumus conditione?, 

 quas adimplcri oportct, cx quarum (ccunda ^. — «;;4-i, 



ftatim dcduci potcft diflautia <7 — V — LZ! Ouodfi por- 



1 n n -f- I ^ * 



ro in tcrtia aequatione loco ^, fcribatur valor nn-\~[^ 



ea crit 



4 a [n -lY ^n n [ci -\- 2 (i) -\- l = - z a n n - a, 

 fluc 



4 a (;; - i}' _}- 3 a ;; ;; -I- 2 (3 ;; ;; -h a -i- -1 := o. 



Prima vero conditio dcdcrat (3 -+- 2 a — L , vndc fit 



P — «n in - ~~ ^ "> H"i valor in illa aequatione fubflita- 

 tus pioducit 



4 a (;; - 1)' -+- ^-^^ - a ;; « -h a + f = 0, 

 flue 



a (3 « « — S ;; 4- 5) — "-'" — » — _ »f »" — ■) 

 ^ ^' »(«-0 ■' — i;T^,r' 



vndc clicitur a. ~ —=i2l*^^=j}_ hincone 



n _ 1 (»' n n — ■»* -♦- 5) 

 ' 40(1 — >,'(iii — s;" 



Pro dirtantia autcm a inucnimus a — v'— i-"L_. 



f. 2(5. 



