%Sz S O L V T I O 



EM = E^ — </uy tumque ducatur Af, et arcus 

 e G perpendicularis in A E. Quum nunc ixt 



EG:i:EfconAEH:z:-E^cof.AEI 

 ct ^. cof.AE=^p:z-EGfin.AE, 

 prodibit 



^ p — </ 0) (in. A Ecof. AE I, 

 atqui eft 



/ fin. ol -f- X cof w zr p , 

 captis igitur vtrinque difFerentialibus prodibit : 



^/ fi n. oj -f- ^X cof 0) -4- </ai (/cof. 0) — X fin, oj) zz </p 

 atque quum habeatur 



<55^— dfwfin.AEcof.AEI— </wC/cof.w— Xfin.cd) conf. §. praec. 

 erit quoque 



<//fin.(o4-^Xcof.u=ro (eu ^Xzi — ^/Tang. (o. 



Simili modo fi du<fli concipiantur arcus B ^, D e , 

 demonftrabitur effe 



^^z::^cafin.BEcof.BEI et </rz=:^oj fin.DE cof.DEI, 



vnde deducitur 



<//«fin.w+</fJLCof.w=:o ct </»fin.a>4-^vcof.w:i:o feu 

 </[ji.— — ^/sTang.oj et ^v :=: — </« Tang w. 



Quum itaque iam fit 



dhidl:: </[JL ; dm :idv:dni:~ Tang. &} : i , 

 patet litteras /, w, «, X, p., v fundlioncs effe eius- 

 dem Yariabilis w. Hinc vero quandoquidem inte- 

 gralia 



f[ldt-\-\du) f /{mdt+iKdu) ; f(jidt+vdu') 



redu- 



