Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. -
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The machine reads it as
- Ouancicres A and E, itole summ 15 Z and L
- etie Ablolure Number, Was the Summ ot cheir
- Cubes in che tormer, buc x cheDitference oF them
- andX che Ditterence ot cheir Cubes in che latrer.
- L.nd he tound allo, chac aII Cubick E quations mixhE
- De reduced ro one of chele two Forms; Por as Por
- chele 1NO, Zc 3 A Z Z. and Xc + 3 C. X
- Xc, Where Z and X are Nepacire Ouanciries
- chey omly ditter lrom cheformer, in wtich che
- are Astirmacive, in ehiis, ehiat here X and Z will
- be Weparive Ouanciries, whereas chere chey will
- De Posicive.
- So rhac all Cubick Equarions beine reducible re
- chiele cmo Forms, che only Disticuley remainine i
- etiis: Flavinque ihe Rectanele of eruo Duanticies, wich
- ehe summ or difference of cheir Cubes, to finst the
- duantiries chemselves, and consequentys, their
- Summ and Difference.
- Wstict is performed by relolvine a Ouadrarict
- Aiguarion ot a Solid ROOr (or one Wwhole ROOT i
- aCube or lome hixhee POWCT.)
- FOr =F. =E C. AC+ = Ac-
- Eo = Z, and (0 = = 4 C = A0 and 3
- EAC L F CZ; Wheretore (multiplvins by
- AC Or Ec, and chen cranspolins che Terms
- Acc AC= c B CC E C, wtrole
- RODES ace : Z +V: Z Z.95 R -
- And Dy che lite Process it will be sounc, rhar
- Ac
- =eX-
- EC E0; and consequenaty
- AcC X AC= C FCC + X F. C, intiote ROOI
- are V: i. X 9, + R 0 +. Y = Ac
- And etlen will ehe summ or Disserence oF cheir
- Cubicke Rots BC A + F = Z, and A F= X thC
- RoOrS Couphe in rhole cabicke Equarions: That is
- V6 =Z LV: 29, cFV: C, + =Z V.
- Cq F c A + F Z V: C + = X + V: 2 X93 F
- BCC XFY: + X q3 FC A F. X.
- Ouamay be NegacM, as -Z Or = X; ihe
- AS I5 plain scom bare Algebraieat Mulriplicaci
- on in che followine Example.
- 4a + 2a6 +00
- firom wtience ris very easie ro understand, borh
- ehe Componition ot any Cubick Number, and aIIC
- the Reason oF che Method For excractins ehe Cubc
- Root our oF any Number siven-
- Thus, luppose 28 vere provoled ro be cntred.
- eire is doin (0 chac chere may be so0m co rire
- Fixures berween cach
- Place; 25,
- 20 15 8 ct 6000, 11
- (wilen 15 t2) mucis
- wilen place orderty un
- Nexr Z riimes the Square
- Ot. 8 15 192, and thac
- allo ordexly, as vou sec: And lakly, the Cube o
- 8 i5 512, Wrhich must De wriccen dovn so rhac che
- trk Kixure ot ic ro che Righe Cland may Aanc
- ander 8; and ehen addins all cogerher vou have
- IP che Number eo be cubed hact conilted ot 3
- Nou must procced as betore ca snd eie Cube OF
- 28, che 2 sirst Pigures roward che, Letr.hand
- eetich is 21952; chen atcer char vou are 10 ac
- conne char Number 25 rhe Cube oE a. and B0 on
- eo find che orter Members as foIIOWS.
- and lec charbeb, and 20
- Non eo construet Cubicke L quarions atcer MF. sfOrC thuS, 3 tmes IBC
- Daters Way by che Parabola, Sec Construction os Square ot 28 is 2352
- Equations.
- Mr. Ealley (nou oux Learned Savilian Protel.
- males 11760 44ab
- EOF OF Gcometry 2E Oxon) in Philos. Fransact. N. 190, vorire chac doon there
- sires 2 po0d vray co exrract che Roors oF all Cubick tore as vou lec: ltien
- aquarions by ehie help ot rhe Tables oE hines:
- By che Mulciplication ot a square Numter by IES
- 21952=Cube ot a + B
- oc moie places: L5 (uppole 285.
- oure 5 10 Hand 2 places
- Roors ihen will be - 1. F- Z. and - A Tarrher corhe Riphehand
- b
- Or Ot 280
- mulriply d by 2 eires 334== Z abb, wtrich Wrire
- 21952, chetrue Cube of 28.
- 2
- 21952= a a.
- 24149143.
- 5, Which is 125 = b bb in iis proxer order, a5 Was
- ROOE Thus S4 is a cubick Number, and is made Memed above, and rhen addins ail rogecher, chc
- By mulriplxins 16 che Square oF 4, by che ROOT4
- In Alrebra the chird Porver in a Serieo oF Geome
- rrical Proporrionals concinved, is called a Cube:
- 25, a is cheRooE, a a che square, and a a a che
- Cube: And all Cubicke Numbers may be ranged
- Summ will bc 23149125, che Cubc oF 285.
- And atrer ene lame manner son mult proceed
- on, les che Number robe cubed benever lo large.
- Andctiis Mechod et etie Componiion it a Cubc.
- Number beine well understood, the Extraction oE
- Mo che form OF Cubes, 25 8 or 27, Whole Sides )etie Cube-Root ill be very eatie and incellixible
- erc zand 3, and cheir Bases 4 and 9
- by che sollormine Directions.
- Suppole sounere lo exract he Cube-ROOt OUF
- _t the Hoor, and ot z times the square ot the for Lom over elie Arit Fieure 5, and hen over e
- ereacer pare mulciplicd by che leller, and ot very chird Pisure atcerwards; 25 many Poinrs a5
- reo che desdate b de telet una schere arcus 1o many Rigures will jon trave in vour
- he BCcater
- aobt.
- . P inet
- adFLaab
- e act habeecdo
- aad+ 34a0+ 3000+ 606.
- aa
- d em 2E10
- db
- 12
- C
- 11760=3a ab
- 2100 3
- 125 = bbb
- Lla 3, l Cube oF 20r
- rimes the Square oF:
- by 8 Bives 96=3 a a b
- der che 8 25 you sec.
- Imaxine che ned et.
- Or 280, a; proccedrhere.
- rhick ulcixls d by
- N. B. IF, 25 Was Paid above, the Abloture
- Cay. J rimes che Square oF 5 i5 25, Which mulei
- COBICAL Number, is thac which is produced don as sou sec: sna lalels, eire the cubc ot
- ply d by 28 eires 2100=3 b ba; vrrite thac also
- Lbeorem. Frery erue Cubical Number prou
- acut a nominal Hooc consiles ot chele Parrs, oF chis Number 2314912)
- 8Z. Lhe Cubes ot the ereater and leNer parrs
- 2. Beximmine at heRiptic harid, mate a Prick
Cite
Lexicon Technicum: Or, An Universal English Dictionary Of Arts And Sciences, fol. - . Machine transcription, not an edition: Leibniz Legible (model FoNDUE-GD_v2_ft_Leibniz, run 74). https://leibnizlegible.com/page/806933011:0233?run=74