Haswell's engineers' and mechanics' pocket-book .. (1844)
Haswell, Chas. H. (Charles Haynes), 1809-1907 · New York, Harper & brothers · leaf 65
e.—As the square root of the product of the abscissae is to theordinate, so is the transverse diameter to the conjugate. Example.—The transverse is 100, the ordinate 24, one abscissa20, the other 80. -v/80X20 : 24 : : 100 : 60 Ans. PARABOLAS. Any three of the four following terms heing given, viz.,… … Example.—The abscissa, e g, is 50, its ordinate, c g, 35.35 ; re-quired the ordinate A F, whose abscissa, e F, is 100.50 : 35.35=^ : : 100 : ^2500 r=r 50 Ans. HYPERBOLAS.B
Engineering · Mechanical engineering
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