2 4-3 



DE FERTFRBATIONE 



§ II. Vt illac acquationcs nd \ivim proplu? ac- 

 commoJcntjr , niultiplicctnr prima pcr co(. (f) , altera 

 pcr fin, (p , crit ob cof. (J)' -+- fui. Cp"" zz i cas ad- 

 dcndo. 



Deinde prior multiplicctur per - fin. (|) , ct altera pcr 

 cof (P , crit eas paritcr addendo 



zdz'^0-\-z'^=^(p—-\dt\ QcoC (p-P fin. (p ) 

 Supcrcft igitur vt pro P et Q^ valores aate cxliibiti fub- 

 ftituantur. 



§. la. Erit autem hos valores cx §. IX. rcIU- 

 tiicndo 

 Qfm. (J)4-Pcof. <p— m^f'Jh^;^J^^ _t- 



(A-+-B)BO» 



firailique modo 



Vsjcol.cp-mn.qj— (A-HBuo» "+" u-^-b^bo» "~ 



At cft fin. (J) fin. -0 -H cof (p cof vi r= cof ( >) - (p ) 

 ir: cof d , ob >! r: (p -h ^ , tum vcro fin (^cof v) -cof. (J) 

 fui. V] — fin. ( (p — >] ) — — fin. ^ , ficquc angulo •>! cx 

 computo cxcunte , habcbitur. 



^lm (p 4-1 coi. qj_ 11^:5)46» -^ V^m'' ^^ 

 Qcof cp - P fm.(p_ ( ji^i^oj -+- t.\+fe* 



§. 13. Qiiodfi iam ifti valores in fupcrioribus nequa- 

 tionibus ( §. XI.) fubllituantur , oricntur fcqucntcs duac 



acquationcs , quibus motus ccntri grauitatis C coo' 



tiQCtiir. 



l.ddz 



