">¥.i } 43 f ^- 



Yfil.deprimendo per cjuadratuin 4-qq, 



[qq- ly [f -xy^-^pp{qq- r^ (p p -^ ,)• 

 -i- i6pp qq{pp- ly —CJ. 

 Eft autem 



(p^-iY ^^pp {pp-^ i)' = (/,/>+ i)\ 

 Hinc requiritur quadratum fieri debere 



(PP -+- ^y {(iq-^y-^-^^PPqqiPp- 0' = o- 



Quae conditio abit in illam foluxiQjiis fpecialis §. i. po- 

 neado p — 2. r , _. . ,, 



§. 5. Sit breuitatis gratia 



(/>/>+ i)* = A A et 16 p p{pp- ly — BBy 

 rt qnadratum ficri debeat haec formula: 



A A {q q — ly ^\- B B q q, vel 



AA9*-i-(BB-2AA)/7^+AA, 

 cuius radix ponatur —Aqq-^-v., vt fiat 



AA^* + (BB-2AA)9^-f AA^AA^^ + aA^y-y + ^i;. 



Vnde eruitur q q = -A-^^^E^zzrrT^ • 



§. 6. Hic iterum cueoit , tam numeratorem 

 quam denominatorcm fradlionis pro q q inuentae euadere 

 quadratum, ponendo 1' v =: A A — B B. Numerator enim 

 AA — «yy abit in BB, et Denominator in 

 '''"'* 2 A A - B B 4- 2 A V (A A - B B],; 

 qui maniferto eft quadratum formulae 



A-}-V(AA-BB). 

 At reftitutis pro J^ et B valoribus fupra §. 5. pofitis 



inuenietur ^ ^ * 



F 2 A A 



