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Principa Mathematica

By: Isaac Newton

...&us ~1. timis argumentatione, pro fe invicem ufurpari poffunt. L E M M A VIII. 57 reLi% dntcp A R, I3 R ctim arw A C B, chorda A B &J’ .tan- gente... ...rn quodvis T ee- dem funt ac in circulo ejufdem curvatwae. w PROPOSITIO VIII. PRQBLEMA 111. diameter CA parallelas iib perpen- diculariter fecans... ...N, quz parabolam tangit in vertice principali. z PROPOSITb XX& PROBLEMA VIII. Ad&Q.&m corps in pefiin%etm'par&boZd :- rcq&irbur~* lex vis centfGp... ...M, fed inter at: tr&ionum omnium S A4 maximam & minimam quail mediocrisf Iroc e& non multo major neque multo minor attra&ione SK $,E,% G’uJ 2. Revo... ...ix! utriufque virtute attrafiiva mutuo exercita in fphaeram alteram. Nam viii- bus ambabus geminatur attra&o, proportione fervata. CO~OI, 6. Si hu... ... equalibus analog%. Eit autem area A23q.K (per coral, 3. lem. VIT. & lem. VIII. lib. I.) ad aream B kq ut Kq ad 4 k 4 feu AC ad -iAK, hoc eft, ut vi...

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