Ziwet, Alexander, 1853-1928, Hopkins, Louis Allen, joint author · New York, The Macmillan company · leaf 182
1 5J^ … Fig. 96 (a) a circZe if 2?iP/2?^P = const. (Ex. 7, p. 54);(6) an ellipse if FJ-\rF^P= const. (§ 114);(c) a hypm-iola if i?iP-J2P= const. (§ 119). The locus is called a Cassinian oval if i?i/-F2P= const. If 172 PLANE ANALYTIC GEOMETRY [IX, § 178 we put FjFi = 2 a, the equation, referred to the…
Geometry, Analytic
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