Benedetti, Giovanni Battista de
,
Io. Baptistae Benedicti ... Diversarvm specvlationvm mathematicarum, et physicarum liber : quarum seriem sequens pagina indicabit ; [annotated and critiqued by Guidobaldo Del Monte]
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IO. BAPT. BENED.
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288
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file
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0288
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/163127KK/pageimg/0288
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<
s
xml:id
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xml:space
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">Sed aliter idem fieri poſſe inueni, hoc eſt
<
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multiplicando
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type
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">multiplicãdo</
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>
radicem quadratam pro-
<
lb
/>
poſiti numeri hominum per .21. & productum item multiplicando per eandem radi
<
lb
/>
cem, & huiuſmodi producti radicem diuiden do per .3. vnde prouentus eſſet nume-
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rus hominum vnius ordinis. </
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Exempli
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type
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">Exẽpli</
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gratia proponu
<
unsure
/>
ntur .3600. homines, multiplica
<
lb
/>
bimus huiuſmodi numeri radicem
<
lb
/>
quadratam hoc eſt .60. per .21. hoc
<
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eſt per productum quod fit ex .7.
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type
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<
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3. & reſultabit nobis .1260. quod ſi
<
lb
/>
multiplicabitur, per .60. hoc eſt per
<
lb
/>
eandem radicem, reſultabit nobis
<
num
value
="
75600
">.
<
lb
/>
75600.</
num
>
cuius producti radix qua-
<
lb
/>
drata eſt ferè .275. qua diuiſa per .3
<
lb
/>
proueniet nobis .91. pro hominum
<
lb
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numero vnius ordinis.</
s
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<
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<
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xml:space
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">Cuiusratio eſt iſta, cogitemus nu
<
lb
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merum .3600. propoſitum eſſe qua
<
lb
/>
dratum
<
var
>.a.b.</
var
>
(ſed non areæ) cuius ra
<
lb
/>
dix .60. ſit
<
var
>.a.c.</
var
>
& quia hic numerus
<
num
value
="
60
">.
<
lb
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60.</
num
>
intelligitur eſſe hominum, quo-
<
lb
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rum
<
reg
norm
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vnuſquiſque
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type
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occupat .21. pedes
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quadratos ſuperficiales ex ſuppoſi-
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to, </
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<
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xml:id
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xml:space
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">& propterea multiplicatur, 60.
<
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cum .21. vnde nobis veniat .1260.
<
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quadrati ſuperficiales pro vnoquo-
<
lb
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que ordine, &
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quia
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type
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.b.c. vt. latus qua-
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lb
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drati
<
var
>.a.b.</
var
>
habet tot ordines homi-
<
lb
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num ſimiliter, hoc eſt .60. igi-
<
lb
/>
tur multiplicando .60. cum .1260.
<
lb
/>
habebimus totalem ſuperficiem
<
var
>.a.
<
lb
/>
b.</
var
>
ex .75600. quadratis ſuperficiali-
<
lb
/>
bus, quæ quadrata imaginemur lo-
<
lb
/>
cata eſſe in quodam totali quadra-
<
lb
/>
to, quod ſit
<
var
>.e.f.</
var
>
cuius radix ſit
<
var
>.e.</
var
>
g
<
num
value
="
275
">.
<
lb
/>
275.</
num
>
pedum qui diuidantur per .3.
<
lb
/>
hoc eſt per numerum pedum latitu-
<
lb
/>
dinis & prouenient nobis .91. pro
<
lb
/>
numero
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type
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>
<
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type
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reg
>
ordi-
<
lb
/>
nis, diuidendo poſtea latus
<
var
>.f.g.</
var
>
per
<
lb
/>
numerum ſpatij inter vnum, &
<
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type
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">aliũ</
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>
<
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ordinem, quod eſt .7. proueniet
<
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nobis .39. pro numero ordinum.</
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<
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xml:space
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">Aliter, & breuius etiam poſſumus idem inuenire, hoc eſt multiplicando
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type
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rũ</
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<
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type
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<
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type
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">hominũ</
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<
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type
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rectangulo .21. vnde venietnobis
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">ꝓductũ</
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.75600 quod pro
<
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<
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ſi accipiemus vt
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, cuius radix erit .275. quæ diuidatur
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.3. habebi-
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mus
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. </
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xml:space
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à ſupradicta, eo
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loco
<
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reg
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<
var
>.a.c.</
var
>
(hoc eſt
<
num
value
="
60
">. </
num
>
</
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