« INTEGRATIO AEQVATIONIS 



vnde nafcitur ^-r^TTT) — -WpT-lT —ItTDji 

 cuiiis integriile in logiirithrais eft 



ita vt habcmus 



,^y(,_^ss)=z^ij^f}i^ hincquc 



g tt (V A . -f-pv ^p;^ — f v A — f> V D)^ 



'' — ' ja (A- D/)pj 



10. Qiiodri hinc regrediamur , reperiemus 

 ~a\^r >PP) ( VA-fi^/DP-ga( V A-f-fiV D)' -,//•■ A ■n» rrv 



vnde definiri oportct q—u + V^uu— i). Scd quia hinc 

 iit «— .'-^T^, rcftituendo p~xy et ^z;:^ , aequa- 

 tio noftra integralis complcta eft 



yx-t-yy _ -C[X-\- V>xxyy) ( VA-j:jvvD:'-a«:VA->-g>V D)' // A 'n-rTN 



feu 



4 AD (A-A'-h>j)+2C( A+Da-aj^) -^-^) (( V A-:ijVD/ 



— aa^VA-hA^VD/) 

 quae euoluitur in lianc 



4 S.l>[xx -\-yy)-i- zC{\ -\-T>x xyy) _' (i-tt«)A"i(i-f-tita)x>VAD.t- ( i-aa'Pyryj 

 V(+AD-CC) — a 



j V(*AD-CC) ,• 



ct poneodo gzz ^^ — ^ prodit 



ATN^ 1 \ 1 «r^/A 1 T»,. ^ (('-<■ 'wm)CC-4A.D)(A-t-Dxry>)-;((tnm-i;CC4-«AD}r)yAP 



4 AD(jf a:+j[)') + a C ( A + uxxyy) src 



11. Nc cafus , \bi VAD fit qunntitas ima- 

 ginaria , turbcnt , iuuabit integrationcm alia \ia , 

 quae ipfa dcllru(flioue terminorum §. 9. obfcrua- 



ta 



