(166) == 



Haec mutatur in kudu-hpdp — udp=o^ vbi /> = |^ , 

 et u — ^. In hac aequatione fi denuo fiat U — pr, obtinc- 

 tur feparatio variabilium , et , introducendo conftantem tt, in- 

 tegratio dabit 



/!L z=i / — iili^: — ■, fiue 



/l — ll(i—r + krr)-{'-—J: x 



X /\. tang. t 



I — l r 



At r zz: — =r -^ , ideoque fit 



i p ~- !■ \ pl p'1'J /(4./;— I) 

 .A.ta„g.l0^^ifll), . 

 fiue , logarithmos- in vnum contrahendo , 



vnde dcducitur 



At eft 

 erit igitur 



I 7 TT TT 



77r-x/p/,(i_A + ;^)' 



= A. tang. / ^^-^Ki-j^T + K .A ^_ , , 



V.^7t + ^?(i-^, + ii-;/ 



indc 



