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A227422
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Decimal expansion of a Young-Fejér-Jackson constant linked to the nonnegativity of certain cosine sums.
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3
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4, 5, 6, 7, 8, 0, 1, 8, 8, 2, 6, 0, 7, 2, 6, 7, 0, 7, 0, 1, 6, 0, 3, 7, 0, 8, 3, 8, 2, 5, 5, 4, 1, 1, 0, 8, 9, 7, 0, 6, 8, 0, 2, 6, 0, 1, 8, 8, 1, 9, 7, 2, 2, 4, 9, 8, 8, 3, 7, 7, 2, 2, 0, 2, 9, 4, 5, 5, 0, 8, 5, 2, 9, 0, 7, 1, 7, 3, 8, 7, 2, 2, 9, 8, 6, 7, 8, 8, 1, 4, 7, 4, 2, 3, 0, 5, 0, 7, 5, 9
(list;
constant;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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REFERENCES
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Steven R. Finch, Mathematical Constants, Cambridge University Press, 2003, p. 242.
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LINKS
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FORMULA
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min { x : 9*x^7+55*x^6-14*x^5-948*x^4-3247*x^3-5013*x^2-3780*x-1134 = 0 }.
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EXAMPLE
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4.56780188260726707016037083825541108970680260188197224988377220294550852907...
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MAPLE
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Digits:= 132:
fsolve(9*x^7+55*x^6-14*x^5-948*x^4-3247*x^3-5013*x^2-3780*x-1134, x, 4..5):
s:= convert(%/10, string):
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MATHEMATICA
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x /. NSolve[ 9x^7 + 55x^6 - 14x^5 - 948x^4 - 3247x^3 - 5013x^2 - 3780x - 1134, x, WorkingPrecision -> 100] // Last // RealDigits[#, 10, 100] & // First
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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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