^^^ D E M O T V 



Dciiide fit amplirudo ^ - ,, ^_(,s-h v;f a n,.;«s.^1;^ ^ 

 quantitas \ero O hinc dcfimtur \t aute 



Ex his autein forir.is colligimus methodum acoua- 

 t-oncs primum erutiis multo fiicilius rcloluLndi. Cum 

 en m pr ma det U =z — =^5 , ti.rtia vero intcgrata 

 ^5'4-UL-A, erit ^L-'-^- A^S, pona- 

 mus L— M}', fictquc M d y — y d !)t\ — A d S. twxiic 

 (ccunda quoJ ticri poicll intcgrata praebct 



d M 

 d S 



4-iL4-Ux\l4-/UL^S =:o 



quae db 



UM=-'-/3« et/UL^S = -2/^^^rr-£//JM 

 tranfit in : 



If 4- 2 M j' - li^^ - 2 />' ^ M = o , 

 qiiac contrahitur in hanc z/Md^ — ^^ — o. Ex 

 illa autem fit 



2 M <// ir A </ S -h j fi^ IM -f- M </ y ita vt fit 



a/M^j-zrAS-HMrH-Bzz^ 



vn'e cum parum colli-jerc liceat , confideremus hai 

 duas acquationes : 



M ^F-j^Miz: A^S ct 2/^^7 = 24 



quas aaibas diffcrenticmus fumto clcmcnto dS con- 

 ftante 



Uddy -ydd M = ct 2 M dy-'^-^^ 



vudc 



