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OR:OS=PH:HX , sive tzJÜL :?Zl=:e:“ e S°Z?.)

a o b {X — n )

x n m—x a e (ni—x )

OR:OT = PH:HW, „ —^ —

a c c(x — n )

OR:OU = PH: HV , „

x — n % q-

■ x

. ae (9- x ): e ' d(x~n).

a d

Itaque rectarum HB, HA, HL, H M, variationibus suis affec-tarum sequentes erunt valores:

BH + HP = a + «

AH-~HX= b <*eo-aex

LH — HW= e

MH-HV= d-

6

x —

b n

a e

m —

a e x

c

x —

c n

a e

9 -

a e x

~ d

x —

d n

Qui si substituantur in aequatione curvae naturam referente , nempe in

abc + abd-\~acd+b c d— C ^

S

sequentem obtinebimus aequationem, neglectis nempe terminis se-cundi, uti vocantur, ordinis:

+ bcd-i-abc~{-abd~\-acd+bce + bde-^-cde

ab dem — abdex+aïbem — a^bex+a^dem—aPdex

ab cd b ede 1

—— H- .-

s s

a* b d em— a* b d e x

cx — cn

i cgx — cgn

ac deo — acdex -\-aPceo — aPcex+a^deo — a^dex

\ aPcdeo — a^cdex

b x — b n

i bgx — bgn

abceq — abcex + a*beq — aPbex •+• aPceq — a^fiex

| aPbceq — a^bcex

dx — dn

[ dgx — dgn j

Quia vero

Jcd+aie + fl! id + ocrfs:

ad c d

D 2

ii

II

II