14- 



MELITATIomS 



—lf-Ff:zz2.Ee~Dd—Ff—:zj-x-z •, &c. vnde 2.a—x.(T.: 

 2.X -a-j .x: :2y-x—z.j': :2z—y-'t.z: .dcc. Hinc fequen- 

 tia flnunt Lemmata. 



1. Si duo fint pondufcula , erit .vzzia , j—Oj 

 reliqua non confiderantur. 



2. Si tria fmt pondufcula, eritj>'~^ , z~Oj 

 reliquis non confideratis , adcoque 2a-x.a::2x~- 

 za.x , \ndc 2ax—x'—2a.v—2a^ , 6cxzizaV2. 



3. Si quatuor fint pondufcula , eritj— .r, 

 z~a, & t~o , non confidcratis reliquis , adeoque 

 za-x .a::x-a. x ; vndc 2ax - x ^~ ax — ^ * , & .v zr: 



4. Si quinquc fint pondufcula, erit snr.v, f—aj 



u~o, reliquis negledis : adeoque 2a—x.a::2X—a—j. 



x::2y — 2X.j':, hinc duae aequationes habcntur, .v- 



~a'-\-aj 6cj.vz:z2a.v. Ex priori aequatione ell 



2 2 

 y----x_-a_ ex pofteriori. .^'"St?, vnde .v=<7l/3. 



5. Si fcx fint pondufcula erit Z—j, /— i*, 



u~a, s~o , reliquis negleftis : adeoque 2a—x.a:: 



2X—a—j.x::j—x\ j. hinc duae aequationes. .v^— «^ 



-\-aj, & aj—jx——ax. Ex pofteriori aequatione 



2 2 

 ., _a»_ . g^ altera r— ^ -° vnde rt^.v— .v^-^.v^— 



^2.v-4-rt^ , feu x'^—ax~—2a-x-\-a'^-zz:o. 



6. Si feptem fint pondufcula, erit i—j,u~Xj 

 s — /7, cy~o, non attcnto ad reliqua. Adeoque za 

 -x.a:: 2X—a—j. x : : 2j —.v—z.j::2z-2j.z , & ita tres 

 habentur aequationes .v -—aa -\- aj, .vj—ax-\-az & 

 xz~zaj. Ex aequatione fecunda z— ^J'^''^ , ex 



ter- 



