4. DE CENTRO OSCILLATIONIS 



lementii. lam quia folicitatio flgens duda in tem- 

 pus,quo effeaumfuumpraeftatjaequipollet effedui 

 produdo , ideo nafcetur aequatio ^^^— P. CP.^i) 



5. Cum vero celeritas adlualis in arculo Mw/ 

 acquifita (§. a.) fit =« > et tempufculum, quo pcr- 

 curritur —dt , erit df—^^ , quod in praeccdenti 

 aequatione ''Jl^=:V.C?.c}p-{-Q,CQ,dr/-^6ic. fuffe- 

 dum , praebet sI^=.?.C?.dp-\-(l.Cq,d^-i-8cc. vel 

 i7M^.Y=P.CP.?/^/'-f-Q;CQ.«r/<7-|-&c. Verum(§. 2.) 

 habetur etiam CM(rt) : CP :: u:p, et dudis extre- 

 mis et mediis in fe inuicem , inuenictur 

 CP.«— ^/> •, et fimili argumento fit in reliquis CQ. 

 2/— (7^ , &c. quibus in praecedenti aequatione fuffe- 

 <flis prouenit aequatio , quae diuifa per a, praebet 

 fAdxz:zVpdp-\-Clq(lrj-\-&.c. Qiiaic fumtis integrali- 

 bus fit 2M.Y=:P;)/J-f-Q.'7'7-H&c. 



6. Qiiia vero (§. 5.)/»=-^, ^=^ , &c. 

 aequatio praecedens abit in hanc aliam aM.rn: 

 (P.CP--i-Q;CQ^ -f-&c.)^~^ . ad abbreuiandum vero, 



pro fumma Indefinita P.CP2-}-Q.CQ=-|-&c. , fcri- 



2 



bam deinceps/P.CP^. eft ergo aMx— H^^^l, quarc 

 «M— .2a£Mx_^ Breuitatis caufla pro — 5L._ fcribatur 



/P.CP jp.cp" 



R, eritque ttizi^ysR.r. 



7. Propter triangula fimilia vero MCD et 

 Mraa, reperitur Mm—dszz „ ""^^ ^ et <//(=''-)—_!- 



dx 

 X — 



■^,aax-x / 



