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A196830 Decimal expansion of the least x>0 satisfying 1/(1+x^2)=6*sin(x). 6

%I #5 Mar 30 2012 18:57:50

%S 1,6,3,0,7,1,2,1,1,9,9,5,5,0,6,9,1,8,9,1,1,7,2,0,2,5,2,1,4,9,6,2,3,5,

%T 8,2,3,1,3,3,1,8,8,7,4,6,4,0,3,0,3,5,5,0,2,4,6,3,2,9,1,5,0,0,1,9,1,5,

%U 2,4,4,8,6,3,8,6,8,0,0,7,4,4,7,8,8,4,0,7,7,1,3,9,0,5,9,1,0,9,8,4

%N Decimal expansion of the least x>0 satisfying 1/(1+x^2)=6*sin(x).

%e x=0.16307121199550691891172025214962358231331887464030355...

%t Plot[{1/(1 + x^2), Sin[x], 2 Sin[x], 3 Sin[x], 4 Sin[x]}, {x, 0, 2}]

%t t = x /. FindRoot[1 == (1 + x^2) Sin[x], {x, 0, 1}, WorkingPrecision -> 100]

%t RealDigits[t] (* A196825 *)

%t t = x /. FindRoot[1 == 2 (1 + x^2) Sin[x], {x, 0, 1}, WorkingPrecision -> 100]

%t RealDigits[t] (* A196826 *)

%t t = x /. FindRoot[1 == 3 (1 + x^2) Sin[x], {x, 0, 1}, WorkingPrecision -> 100]

%t RealDigits[t] (* A196827 *)

%t t = x /. FindRoot[1 == 4 (1 + x^2) Sin[x], {x, 0, 1}, WorkingPrecision -> 100]

%t RealDigits[t] (* A196828 *)

%t t = x /. FindRoot[1 == 5 (1 + x^2) Sin[x], {x, 0, 1}, WorkingPrecision -> 100]

%t RealDigits[t] (* A196829 *)

%t t = x /. FindRoot[1 == 6 (1 + x^2) Sin[x], {x, 0, 1}, WorkingPrecision -> 100]

%t RealDigits[t] (* A196830 *)

%Y Cf. A196832.

%K nonn,cons

%O 0,2

%A _Clark Kimberling_, Oct 07 2011

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