MOTUS TURBINUM SUPER PLANO &c. 383
qdy + rdz — ~~ A ( na ~ c c 2 dp huc addatur 4 ®
ydq + zdr = — Adp
erit qdy + ydq -j- rdz + *dr
— aa
cc
hdp cujus integrale eft
qy 4 . rz = B —
era
cc
Ap.
Torro colliecndo i°.» + i°.z prodit:
*nfgdt , , _ - *nfg*p
yi,j + (rsi - s»)-
n fddp
q„ are eam Iit — =1+ ~^r ^
,,/,+*&= s^lSiJL _ ifi ^ -
cc ccdt z
unde integrando nancifcimur:
„ 4 fgp ffdp*
yy + zz=z C- ^
cc ccdt z
Cum jam fit ~~ J ~ — qz^-ry, obtinemus novam aequationem finitam ;
4fgP ff
yy + zz — C ”ex qua cum fit
cc
cc
QiZ-ryY
(qz — ry) % —
Ccc 4 gp cc (yy -f- zz)
ff f
ex ante inventa- autem
(qy + rz) z - (B -
prodibit his addendis
#
haap
(qq + rr)(yy -f a») =
cc
Ccc
)
4gp cc{ijijd-zz)
ff /
Aaap V
-“V
trnde ob qq * -$- rr z=. *i — pp elicitur
ff
■f (B
(r-K»