Mathematics for engineering students, Analytical geometry and calculus (1907)
Keller, S. S. (Samuel Smith), 1867-1923, Knox, W. F., [from old catalog] joint author · New York : D. Van Nostrand company · leaf 93
become whenthe origin is moved back along the axis to the directrix ? Art. 60. To find the equation of a tangent to the para-bola. The process employed to find the equation of a tangentto the circle is just as effective.for the parabola. If in the equation toa line through two givenpoints, the… … Fig. 33- In the equation to a straight line, tangent. y (x — xf) (B) x — x let the points (V, /) and {x, y) be on the parabolay2 = 2 px; then the two equations of condition >2 =•*.**■/ (2) (3) 2 px /2 = 2 pof Analytical Geometry. 85 arise from substituting these values in the parabolaequation.…
Geometry, Analytic · Calculus
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