Plane and solid analytic geometry; an elementary textbook (1901)
Ashton, Charles H. (Charles Hamilton), 1866- · New York, C. Scribner's sons · leaf 200
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 which FlG- 91- is the positive direction of the axis OX, and the curve can beplotted as in Fig. 91. 2. Plot by this method the… … 182 . ANALYTIC GEOMETRY [Ch. XIII, § 97 97. Summary. — It has been shown in this chapter thatthe general equation of the second degree represents, and when B2 — 4 A C < 0, an ellipse (real or i a n imaginary), when A * 0, and when w _ 4 A Q = Q? ft parabola? and when J92 — 4 ^1C > 0, an…
Geometry, Analytic
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