xda DE QVANTITATIBVS 



Quare ex fcala relationis ;. R— 14. Q— P formetur 

 feries recurrens : 



i; 14; 195; 2715; 37829,' 5 2(5890 ....P, Q, R 

 eritque proxi-me V 5 — |-^ 2 ftue 



V <» — 15 2' i*-' 2* ?5i- fl • i^"» -j* etc Tet 



Problema VL 



40. Kadicem cubicam ex quouis nwnero non-cub(i> 

 propofito per formulas ante exkibiias proxime ajfigncure^ 



S o I u t i o. 



Sit numerus propofitus non cubus —a~^ B^ 

 €t ponatur ^-3—X crit a ~i- b — a (1 -f- x) idcoquc 



a i 



y {a -\- b) — <i i\ -V- x)". Habemus ergo n~\'^ vn^ 

 de ex §. 28. nancifcemur has approximatioacs : 



H-i. i^ 



V(o*+6)— rf. 



I r. 4. 





s +* i^-r^,. -^a:c+— . — a: 

 etc. 



Euoiiv- 



