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The geometrical interpretation of analytic operations
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analytical anticaustic arc length argument calculate called cardioid Cartesian centre of gravity chord circle evolvente circle of radius collinear complete quadrangle complex number conic constant cord corresponding cosh cross ratio cusp cycloid direction directrix distance double points dwjdz ellipse envelope equal angles evolute example exp jco exp jr F1 and F2 factor Feuerbach's circle fixed point foci formula function geometrical hyperbola hypocycloid imaginary inversion involution lemniscate limacon line at infinity locus logarithmic spiral modulus natural equation normal original curve orthogonal Pappos parabola parallel parameter pedal pitch circle plane point assemblage point of intersection points z1 pole and polar quotient radius of curvature radius vector ray pencil real axis represented rolling circle sides sinh straight line strophoid tangent points theorem third order curve three points tractrix triangle trochoid unit circle velocity vertices z-plane z1 and z2 zero Zwikker