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Universal Parabolic Constant

Just as the ratio of the arc length of a semicircle to its radius is always , the ratio of the arc length of the parabolic segment formed by the latus rectum of any parabola to its semilatus rectum (and focal parameter) is a universal constant(1)(2)(3)(4)(OEIS A103710). This can be seen from the equation of the arc length of a parabolic segment(5)by taking and plugging in and .The other conic sections, namely the ellipse and hyperbola, do not have such universal constants because the analogous ratios for them depend on their eccentricities. In other words, all circles are similar and all parabolas are similar, but the same is not true for ellipses or hyperbolas (Ogilvy 1990, p. 84).The area of the surface generated by revolving for about the -axis is given by(6)(7)(Love 1950, p. 288; OEIS A103713) and the area of the surface generated by revolving for about the -axis is(8)(9)(Love 1950, p. 288; OEIS A103714).The expected distance..

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