r 33^ 3 
fumefi, utriufqi fundmenfi^m expnere^ ac fimul emendata 
in re turn difficiliy Imem quantum vdeam ajfem, 
Confiructio quam tradit Cartefius, qu^q; facillme radices 
4zqtiationum omnium Cubicarum vel hiqwadraticarum^ uhi dejicit 
f^cmdustermmuSyVruity'UtnotafuffonipoteJtj an amen cum 
car do fit a quo fuhfequentia pendent y ne dij[ertatiuncula hac ca^ 
fite trun'cdtavideatuYy ex illius Geometria defumptam fla- 
cuit Regulam adjungere^ pmculis nonnullis in meliu^ uti reor 
tranfpofitis. 
Deficient e fecundo termino omnes <equationes Cuhic^ reducuntur 
ad ham form am 2? . ^ . a p z. a a q. —Oyac Biquadratics ad ^ 
hanc z''" . % . a p z z. a a q z. a' r = 0. f uhi a deftgnat Latuf 
feU'umFaraboU cujufvis data^ quam in CpnfiruUione adhi^ere 
licet.) velfumendo a pro VnitatCy ad hanc 1? •if: . p z. q = 0^ 
njcl ad hanc z"*" . ^ . p z z. q z. r ~ 
"Jam data Parabola F- 
A G cujus Axis fit A C- 
D K L latm return a 
veliyfiat A C e]m dimi- 
diumac collocetur femper 
a vert ice A verfiu^ interi- 
or a fgura : dein fumatur 
C D — i p in line a -ilia 
A C continuata verfim C 
[tin aquatione fuerit — p, 
vel verfm alteram par- 
tem fi habeatur -f- p. Pt?r- 
ro epuniioV>.:,aut cx^punc' 
to C fi non habeatur quan- 
tit as p, erigenda eft ad 
axcm perpendicular is D- p 
E £qualis t q, dextror- 
[urn quidem fi fuerit — q, ad alterum 'Vero axis latus fi fuerit 
4- q ; Cir cuius centra E radio A E'defcriptm^ fi ^quatio fu- 
erit tantum Cubic a^ Faraholam tot punBis ^ & G inter fecahit 
quot ver-as hahet Radices^ ^mr urn quidem ajfirmativ^ut G K 
erunt 
