388 D E M O T V 



idcoqiic 



X_ — X _ 



s — / -f- ^ f'' /^ ^ydx——y-\-ze^fe ^dy. 



X 



Tab. VII Sit nunc tiibus in B chiufus , ct altcra fcala 



f'g- 9S- ccleritatum « B ita pcr B traufibit , vt lcmpcr ibi 

 liat ct.lentas a ~ o , idcoquc 



o — ~bb(TM-tm'-b. T.M/w + />(TN + n;).. 



Primo ergo efle oportct T ^ -{-- 1 ti — o, et (calae 

 «B continuatio erit BN ipfi aequalis ct contrarie 

 fita ; pro altcrius vcro (calac dcnfuatum c m con- 

 tinnatione inutnicnda vocatis fpatiis B T n; B / :r;.v, 

 applicata cognita tm—y et incognita 



TM — xr, fieri dcbet /;/^.v+/xr^.v -f- />(.=;- j') = 0, 



vnde rcpcritur 



X X X x^ 



z—y~~e bfe^ ydx—-j^ze hfebdy. 



Coroll, i: 



FJg- ^7- 112. Cafu quo tubus in B c(l apcrtus , pofl- 



quam ex formula inucnta fingulae applicatac T N 

 fucrint dcfinitae , non opus e(l aream hiiius conti- 

 nuationis feorfim quacri , cum cx conditionc prac- 

 fcripta fit arca 



B/T N z= I B (T N - / «) - B// m. 



Coioll. . 



