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A196823
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Decimal expansion of the number c for which the curve y=1/(1+x^2) is tangent to the curve y=-c+cos(x), and 0<x<2*Pi.
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4
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0, 9, 3, 7, 9, 0, 0, 2, 2, 4, 4, 3, 5, 8, 8, 1, 4, 0, 6, 4, 6, 8, 9, 1, 6, 2, 7, 2, 0, 2, 1, 0, 9, 9, 8, 6, 7, 0, 9, 0, 1, 2, 8, 8, 0, 7, 8, 5, 3, 3, 2, 8, 7, 2, 7, 1, 6, 2, 8, 5, 9, 7, 3, 8, 8, 1, 3, 4, 8, 9, 3, 1, 0, 9, 7, 8, 6, 5, 5, 8, 9, 5, 2, 4, 9, 0, 1, 4, 9, 2, 3, 8, 4, 3, 1, 1, 5, 3, 8, 4
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OFFSET
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0,2
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LINKS
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EXAMPLE
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c=0.09379002244358814064689162720210998670901288078533287...
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MATHEMATICA
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Plot[{1/(1 + x^2), -.094 + Cos[x]}, {x, 0, 1}]
t = x /. FindRoot[2 x == ((1 + x^2)^2) Sin[x], {x, .5, 1}, WorkingPrecision -> 100]
c = N[-Cos[t] + 1/(1 + t^2), 100]
slope = N[-Sin[t], 100]
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CROSSREFS
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KEYWORD
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AUTHOR
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EXTENSIONS
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0 prepended to get correct constant value by Michel Marcus, Feb 10 2015
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STATUS
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approved
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