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Maurice Nicoll featured in Parabola's Fall 2008 issue: MAN & MACHINE © 2008 Parabola Magazine...
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www.parabola.org/
www.parabola.org/
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Parabola has following properties. 1.The distance from the point on the parabola to focus is equal to the distance to directrix. (PF = PH)
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www.ies.co.jp/math/java/conics/draw_parabola/draw_parab...
www.ies.co.jp/math/java/conics/draw_parabola/draw_parabola.html
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Parabola
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In mathematics, the parabola (pronounced /pəˈræbələ/, from the Greek παραβολή) is a conic section generated by the intersection of a right circular conical surface and a plane parallel to a generating...
en.wikipedia.org/wiki/Parabola
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How the parabola is used for focusing waves, studying motion, describing orbits, surveying and making bridges, and how to draw one Parabola is, of course, from Greek, and refers to a particular plane curve. The word parabolh means a "comparison," literally "a throwing beside." The accent is on the last syllable.
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www.du.edu/~jcalvert/math/parabola.htm
www.du.edu/~jcalvert/math/parabola.htm
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Lesson 2: Find the vertex, focus, and directrix, and draw a graph of a parabola, given its equation. Lesson 3: Find the equation of our parabola when we are given the coordinates of its focus and vertex.
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jwilson.coe.uga.edu/EMT725/Class/Sarfaty/EMT669/Instruc...
jwilson.coe.uga.edu/EMT725/Class/Sarfaty/EMT669/InstructionalUnit/Parabolas/parabolas.html
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The parabola described by the equation y = ax2 + bx + c can be quickly graphed by locating the vertex, the y-intercept and determining whether the parabola opens upward or downward. If a > 0 then the parabola opens upward and if a < 0 the parabola opens downward.
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www.math.csusb.edu/math110/src/functions/parajava.html
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Two negative pedals of the parabola {t,1/4 t^2} Like ellipse and hyperbola, there are many ways to define parabola. A common definition defines it as the locus of points P such that the distance from a line (called the directrix) to P is equal to the distance from P to a fixed point F (called the focus).
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xahlee.org/SpecialPlaneCurves_dir/Parabola_dir/parabola...
xahlee.org/SpecialPlaneCurves_dir/Parabola_dir/parabola.html
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The parabola was studied by Menaechmus who was a pupil of Plato and Eudoxus. He attempted to duplicate the cube, namely to find side of a cube that has a volume double that of a given cube. Pascal considered the parabola as a projection of a circle and Galileo showed that projectiles follow parabolic paths.
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www-groups.dcs.st-andrews.ac.uk/~history/Curves/Parabol...
www-groups.dcs.st-andrews.ac.uk/~history/Curves/Parabola.html
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Graph of a parabola, the constant function, the identity function, the absolute value function, the square root function, and the cubic function. In the parabola y = x², the coördinate pairs are (x, x²). We can see that the following points are on the graph: (1, 1), (−1, 1), (2, 4), (−2, 4), and so on.
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www.themathpage.com/aPreCalc/graph-of-parabola.htm
www.themathpage.com/aPreCalc/graph-of-parabola.htm
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Parabola: several properties of parabola The parabola results when the plane is parallel to a generating line of the cone. This is an unbounded curve some of whose properties will be discussed and illustrated below.
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www.maa.org/editorial/knot/Parabola.html
www.maa.org/editorial/knot/Parabola.html
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