43<J DE PERTVRBATIONE MOTVS 



pro ?}t 

 + <J ^ O rr - I cof. ^ + \ col. 3 { 



- 3 P Q^ 1= + ^ cof. f — I cof. 3 f 

 + 5^?'=: f<J.cof;-<J.cof3f 



- 4- 'p' — -3.cofr -i.cof. 3 r 



I cof. / — Vcot. 3 ^. 

 Simili moLio ex ahcra acquatione huius ordinis colU- 

 gimus : 



- S^Q.:^-' H fiii. / - f nn. 3 if 



- 3 P O. r:: - : fin. £ + ^ fin. 3 f 

 4-<J. '^'P — — 3. fin. f — 3 fin. 3 * 



- |. P' =: + 9- fi'i- ^-3 fin- 3 ^ ,,, 



;_ crgo pro M 



+ S. fin. t — '/. fin. 3 t. 

 Hinc igitur pro priore angulo ^, ell {J-izr, 2»? r ! 

 ct M — i vndc fit 5t — '^ — ' ficque hic -yalor 



forct indefinitus , quia autcm iam fiipra tcimino 

 cof. ; dcbitus cocfficiens cft tributus , hic poni opor- 

 t(.t S*^ — o , ex quo fit N — -l-s. Pro ahero autem 

 angulo 3 f (cu JJ. = 3 , habemus 2?! r: — V et 

 M rr - V vnde deducimus 5 1 — — ,' et N — — /^ 

 quocirca pro tcrtio ordine cruimus 



fK = + o.cof / - e.cof 3 ^ i R =^+ S fin. / - ,;. fin.3.r. 



15 Ordini quarto hic non immoramur quo- 

 niam hanc inueftigationem iani ahbi fufius docuinius 

 atque ad pradcns inftitutum fufficit, motum rcgula- 



rcni 



