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A198503 Decimal expansion of x>0 having 4*x^2=sin(x). 2
2, 4, 7, 4, 5, 6, 3, 5, 6, 7, 7, 0, 3, 8, 9, 8, 7, 2, 7, 3, 0, 3, 2, 8, 7, 7, 6, 3, 3, 7, 9, 9, 3, 7, 2, 5, 2, 6, 1, 6, 4, 9, 4, 0, 2, 8, 4, 0, 2, 1, 2, 8, 3, 8, 1, 5, 0, 3, 2, 6, 6, 1, 6, 9, 5, 3, 9, 4, 2, 8, 1, 2, 1, 8, 3, 3, 6, 6, 1, 7, 2, 0, 2, 0, 5, 9, 0, 5, 1, 2, 0, 2, 2, 1, 7, 6, 2, 5, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

See A198414 for a guide to related sequences.  The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=0..98.

EXAMPLE

x=0.2474563567703898727303287763379937252...

MATHEMATICA

a = 4; b = 0; c = 1;

f[x_] := a*x^2 + b*x; g[x_] := c*Sin[x]

Plot[{f[x], g[x]}, {x, -.2, .4}]

r = x /. FindRoot[f[x] == g[x], {x, .24, .25}, WorkingPrecision -> 110]

RealDigits[r] (* A198503 *)

CROSSREFS

Cf. A198414.

Sequence in context: A141330 A239324 A114375 * A129200 A074958 A222407

Adjacent sequences:  A198500 A198501 A198502 * A198504 A198505 A198506

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 25 2011

STATUS

approved

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Last modified February 27 12:22 EST 2020. Contains 332306 sequences. (Running on oeis4.)