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# Title: Qua Continentur, Oratio Inauguralis. Mathesis Universalis; sive, Arithmeticum opus Integrum, tum Numerosam Arithmeticam tum Speciosam complectens. Adversus Meibomii, de Proportionibus Dialogum, Tractatus Elencticus (shelfmarks Leibn. Marg. 84:1, Stück 1; Leibn. Marg. 84:1)
# Folio 354, page id 826603459:0400
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354
De Regula Aurea Reciproca.
CAP. 38
Duo minor eA EerMInUS CErEIUS, (VIrOTUIM NUMerUS;) eomaior
rucurus lic terminus quarcus, (numerus dierum requiticus;
per regulam icaque inverlam, quaerendus cA terminuS QuaEEUS.
40.
Eodem modo: Si laperi laro pedes 9, loneo 20; obducendus pannas
vilior, quirolum recat, latus pedes 3: quaeritur quot pedes loneus esse de
beat, un necorio sufficiar e ouoniam
hic manifectum sic, quo minorem
habeac lacicudinem pannushic, eo
majorem requiri lonsicudinem,
qua lacicudinis defectus supplea.
9. 20 : 3.  60.
3) 180(60 - 
cur: per regulam inverlam, reverietur lonsicudo quaelica, Deo
De operation um 60. Acque in aliis paricer.
num compen. ux autem operarionum compendia, de Regula directa, in
diis; ex pro. apice praecedente oltendimus. (sire quond ordinem operacio.
bationiem. num perhciendarum, live etiam terminorum praecedancam ron
ductionem,) etiam hic, mucacis mucandis, locum habene. Nec
opus estat ea Beillarim hic repecam; sed porius ut lcctoris la-
facicaci permicratur, quae illic diera lunc his apeare. Quod 
de Probationibus illic eradicis, incellectum velim; ouas, qui cano
ei elle pucec, etiam huc, mucatis mucandis, non disticulcer erant.
Ferat.
Moluctiohu. Pocandum denique, Proporrionem Reciprocam, in Directam con-
jus Reea Cersum iri, si qui in reciproca est terminus veriius, starvatur in directaprio
od directam. Mu. Nempe G(E
In provortione reciproca 9. 20 : 3. d - 60.
Eric in proportione directa 3. 20: :9. & - 60.
Rcciproced
9. 20 : 3. 8 = 60.
3d180(60 - a
Directe.
3. 20::9.  = 60
3)180(00=
Aeque hactenus de Aurea Regula simplici; sive Regula Frim
um; cam directa, quam Rcciproca. Sequitur uc de MulciplI
ei verba Faciam; ubi nempe plures quam eres occurrunc cermi-
Ai iplaque Proporcionis Resula (apius repecenda. E. AgUC ca,