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"Demonftratio. Vocetur Ordinata MN, Z; fubtangens 
AO feu ME, s: & ad axem AR conftruacuraliaCurva HGE, 
cujus aequatio 2sz=x% ubi ejus ordinata (jM=x ; dko quod 
fit quadratrix Logarithmicae juxta methodi meac fundamen- 
tum 5 fcil. ejus lubnormalis eft refpediva: hujus Ordinatar 
sequalis : utex calculoiftius methodi patebit: Ergo (juxta ali- 
bi a me expofita) fi ad G ducatur GC pcrpendicularis & 
jequalis lineas GM, nec non HD parallela ad GC, & lineis 
GM, CM occurrens in B & D ; erit trapezium GBDC 
== AONM. Sed GBDC = GMC — BMDi=i;c«-.i BMq 
=SZ— I HAq; fed H^^^/z^Oq ex natura Curv^g HGQ, 
ergo GBDC = SZ ^ AO q = AO x MN — AOq 
= AOx MN— AO = ME x MN — ME=ME x EN; 
Ergo etiam AONM=MExEN. Q^E. D. 
Gum Methodum meam meam ad hujufmodi Figuras appli- 
carem ; inveni Errorem aliquomodo in Calculum Bernoulia- 
num irrepfiffe, dum figurae cujus aequatio = Quadratu- 
ram aflignat ^yy^^ ~ yy in perexiraio fuo Tradatu — Dc 
principiis Calculi Exponentialis ; eft eoim Iftius figurx. 
Area = ubi v abfciffam & z ordinatam defigoat. 
Vni. An 
