A Treatise on Conic Sections: Containing an Account of Some of the Most Important Modern Algebraic and Geometric MethodsHodges and Smith, 1850 - 343 pàgines |
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anharmonic ratio asymptotes Ax² axes bisected bisector chord of contact chords of intersection circumscribing co-ordinates coincide conic having double conic section conjugate diameters constant ratio cos² Cy² directrix double contact drawn ellipse envelope equa equal find the locus fixed line fixed point focal radii focus four points geometrical given conic given line given points Hence hyperbola imaginary points infinite distance inscribed intercept joining the points last Article line at infinity line joining line meets meet the curve ordinate origin parabola parallel Pascal's theorem perpendicular plane point of contact point x'y points at infinity points of intersection polar pole projection properties quadrilateral radical axis radius vector reciprocal rectangle right angles right line second degree sides square subtended tangent theorem tion triangle vertex vertices