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A198495 Decimal expansion of x>0 having 2x^2+x=4*sin(x). 2
1, 1, 1, 2, 3, 4, 1, 7, 4, 2, 4, 1, 8, 4, 5, 0, 0, 0, 9, 5, 3, 2, 1, 0, 1, 6, 8, 7, 5, 6, 3, 7, 5, 9, 2, 9, 9, 7, 8, 5, 4, 3, 8, 7, 0, 5, 2, 7, 8, 1, 4, 4, 4, 7, 5, 9, 2, 2, 8, 4, 4, 4, 0, 5, 7, 8, 4, 0, 2, 2, 2, 4, 7, 2, 5, 6, 5, 7, 9, 2, 9, 6, 1, 1, 1, 8, 2, 5, 1, 6, 4, 3, 8, 7, 2, 8, 2, 5, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

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

LINKS

Table of n, a(n) for n=1..99.

EXAMPLE

x=1.112341742418450009532101687563759299...

MATHEMATICA

a = 2; b = 1; c = 4;

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

Plot[{f[x], g[x]}, {x, -.2, 1.5}]

r = x /. FindRoot[f[x] == g[x], {x, 1.11, 1.12}, WorkingPrecision -> 110]

RealDigits[r] (* A198495 *)

CROSSREFS

Cf. A198414.

Sequence in context: A030104 A255590 A049563 * A084453 A097104 A008310

Adjacent sequences:  A198492 A198493 A198494 * A198496 A198497 A198498

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Oct 25 2011

STATUS

approved

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Last modified June 7 02:46 EDT 2020. Contains 334836 sequences. (Running on oeis4.)