C 342 3 
d({uiiUone^ velin z b = o, fvfuerit — b ; aquatic nova 
poducta eafdem hahehit radices cum Cubica^ atq\ infufer alte^ 
ram iffi — b aqualem, fi fuerit — b in ac[uation€ ; vel contra. 
Proponatur -conjlruenda -"Z*b-|-apz-j-aaq=:o, 
-rr 1 • .i^z"^— z^b-fapz^-faaqz 
Hacductam z^hft j^^, b--bbzz + abpz + aaqb. 
Hie deficit fecundm terminus ^ ac coefficiens tertii — b b -j- a p 
dat — —4" i P ^oco i ^ velC D in Confiructione. C^vtQCiiy 
2 a 
& ex dimidio coeficientis termini quart i 4" 4" 
sa 
iq 'z;^'/ D E ufurfanda ; /t^^^j^j determinatur centrum ctrculi qua-* 
ftti : ato[) oh dat am un am ex radicibus aquationis nov£yV\z. — 
vel -j- b, dahitur etiam functum in circumferentta^ id ejl Ra-* 
dius ejus. Deniq) defcrifto circuloy ah interfectionihus. ejtis .cum 
Parabola demijfa in Axem ferfendicula aquationis radices exhi^ 
hebmty affirmativas & negativas^ eadem lege ac fupra, 
Invefiigatur autem centrum Circuli confiructione ferc[uam 
faciliyC^terifq; omnihm inCubicis praferenda. Defer if t<& Para'* 
hoU AMD lit vertex A, atq; Axis 
AF: addijlantiam iffi A 
b ^qualem ducatur Axi 
farallela D K, ad dex* 
tram ft fuerit + b in a- 
quationey ad fmiftram fi 
' — b, qti^ ParaboU oc" 
currat in fmcto D. Cen^ 
tris Y> & A defer ibmtur 
radiis d^qiidtbm arcm. oc^ 
ciilti utrinq\ fefe inter- 
fccantesy ac fer fectia- 
?turn pmcta ducatur line a 
interminata B C, qu^z 
medio line^ fuppofita AD 
■perpendicuUriter infifiat, 
& Axi occunat in pmcto E. Ah E, infer ne quidemfiin ^iLi- 
tione babcmr — p, vel f iperne verfm A (i fuerit -f Z^^-' 
tur 
