4 DE CONSTRrCTIONE 



refultabit inde aequatio D H^k pdp-^-ghilp-^-ghpcft 



'^gU^trzo, 



4. In hac inttenta aequatione iam prlmus termi- 

 lius euanefcere debet pofita aeqiiatione gkk-^-ek-^-fk-^ 

 €—0 , ex qua elicietur kzzrl±±i^ , flifta nempe fcr 

 '[^{ee-\-zef--\--if- — ^^g\ ^am aequatioDtuncmutabiturin 

 ^gktdp-^gkpdt-\-pdt:=zo ,^ vel reltituendo inuentum va- 



lorem litterae ^,in fequentem E--- {e-f-^-I) tdp^ 

 (-e'\'f'^l)pdt-+-2gtdezz:o, 



<. Ad fummationem aequatioms E, diuidafur ea 

 ^tvpt , et emergetf •^-+- j-|— H-^ ;-^-4— ^- __ ^y 

 aequatio compofita ex duobus elementis logarithmicis 

 ^P y et 4^-, n vero haec aeqiiatio integrabilis iiar , po- 

 mtur ^=4^ ^t habebimus -/-^^iL^_W^ f^4- 

 --zro , quae eft integrabilis , nam integralis eius e(l 

 ^^_^4-/)Lo^^ .p-V-( f-e-^- 1) LogJ-^-l.og . uzizLogD quantita- 

 tisconftaotisjhuic vero aequationiLog.micae competit ab- 



foluta/--^-^'/"'-^^ //=D, hinc^-'=:D'-/=P/^^^ 



j^e-:^r,adeoque ^^f-{-^l )-Ti ^^^ t -^iu^x 

 Qgdt , ex hac vero reiultabit fafta Dzniy fequens 



Q.gt^-S-^hltz^*''^'^^"^ dt, Huius vero integralis efl: 



