Plane and solid analytic geometry; an elementary textbook (1905)
Ashton, Charles H. (Charles Hamilton), 1866- · New York, C. Scribner's Sons · leaf 198
rred to these lines as X and Y- axes. Construct the two lines.From the original equationwe see that the curvetouches the X-axis atthe point (4; 0), and doesnot cut the F-axis. Itis then easily seen whichis the positive direction of the axis OX, and the curve can beplotted as in Fig. 91. 2. Plot by… … Fig. 91. 182 ANALYTIC GEOMETRY [Ch. XIII, §97 when A = 0, 97. Summary. — It has been shown in this chapter thatthe general equation of the second degree represents, and when B^ — 4: AC< 0, sm ellipse (real orimaginary),when A =7^ 0,1 ^^^^ ^j^^^ B^-4:AO=0,^ parabola, [ and when B^ — 4:AC> 0,…
Geometry, Analytic
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