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A133868
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Decimal expansion of the smallest positive fixed point of sec(x).
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17
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4, 9, 1, 7, 1, 8, 5, 9, 2, 5, 2, 8, 7, 1, 3, 2, 3, 8, 3, 9, 6, 9, 6, 9, 0, 6, 8, 5, 2, 4, 6, 5, 0, 3, 9, 7, 8, 6, 0, 9, 4, 8, 5, 0, 0, 0, 9, 9, 9, 1, 2, 1, 1, 2, 1, 5, 9, 7, 1, 2, 8, 9, 3, 3, 7, 1, 7, 7, 5, 2, 4, 0, 7, 9, 0, 5, 9, 7, 5, 0, 9, 1, 7, 6, 2, 2, 5, 2, 6, 8, 0, 0, 1, 9, 2, 8, 0, 3, 5, 7, 3, 8, 8, 2, 2
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OFFSET
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1,1
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REFERENCES
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Mohammad K. Azarian, On the Fixed Points of a Function and the Fixed Points of its Composite Functions, International Journal of Pure and Applied Mathematics, Vol. 46, No. 1, 2008, pp. 37-44. Mathematical Reviews, MR2433713 (2009c:65129), March 2009. Zentralblatt MATH, Zbl 1160.65015.
Mohammad K. Azarian, Fixed Points of a Quadratic Polynomial, Problem 841, College Mathematics Journal, Vol. 38, No. 1, January 2007, p. 60. Solution published in Vol. 39, No. 1, January 2008, pp. 66-67.
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LINKS
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Eric Weisstein's World of Mathematics, Secant
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EXAMPLE
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4.9171859252871323839...
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MATHEMATICA
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RealDigits[ x /. FindRoot[ Sec[x] == x, {x, 5}, WorkingPrecision -> 105]][[1]] (* Jean-François Alcover, Oct 22 2012 *)
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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