An Elementary Treatise On Cubic And Quartic Curves
The book An Elementary Treatise On Cubic And Quartic Curves was written by author Alfred Barnard Basset Here you can read free online of An Elementary Treatise On Cubic And Quartic Curves book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is An Elementary Treatise On Cubic And Quartic Curves a good or bad book?
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Since /is a constant, (1) may be written in the form (vi + v„) (?•' + w, + lu,) + F = 0, CIRCULAR CUBICS. 75 where V is the general equation of a conic in Cartesian coordinates and Vn, Wn are binary quantics in x and y. This equation is equivalent to Vir2 + w, + Mi + i«„ = .; (2), where Un is also a binary quantic in x and y. Equation (2) is the general equation of a circular cubic in Cartesian coordinates. 123. To find the equation of a circular cubic which has a pair of imaginary points of in...flexion at the circular points. If u, V, w be any three straight lines, the equation u (i)' + v?) + /•* = represents a cubic having one real and two imaginary points of inflexion on the line at infinity, and the tangents at the two latter points are i; + tw = 0. Let the origin of a system of Cartesian coordinates be the point of intersection of these two tangents, then, if the two imaginary points are the circular points, v = x, w = y, and the equation of the curve becomes u (a;2 + y-) + /■' = 0, or {x- + y") (px + qy + r) + c' = 0, where p, q, r and c are constants.
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