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PROPOSITIO XXXI. PROBLEMA XII.
Deſignet QpmaqEllipſin, axe majore Qq,minore abde
ſcriptam, QAqCirculum circumſcriptum, TTerram in utriuſque
centro communi, SSolem, pLunam in Ellipſi motam, & pmar
cum quem data temporis particula quam minima deſcribit, N& n
Nodos linea Nnjunctos, pK& mkperpendicula in axem Qq
demiſſa & hinc inde producta, donec occurrant Circulo in P& M,
214[Figure 214]
& lineæ Nodorum in D& d.Et ſi Luna, radio ad Terram du
cto, aream deſcribat tempori proportionalem, erit motus Nodi in
Ellipſi ut area pDdm.
ſcriptam, QAqCirculum circumſcriptum, TTerram in utriuſque
centro communi, SSolem, pLunam in Ellipſi motam, & pmar
cum quem data temporis particula quam minima deſcribit, N& n
Nodos linea Nnjunctos, pK& mkperpendicula in axem Qq
demiſſa & hinc inde producta, donec occurrant Circulo in P& M,
214[Figure 214]
& lineæ Nodorum in D& d.Et ſi Luna, radio ad Terram du
cto, aream deſcribat tempori proportionalem, erit motus Nodi in
Ellipſi ut area pDdm.