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A199156 Decimal expansion of x < 0 satisfying 3*x^2+2*sin(x) = 3. 3
1, 2, 8, 0, 1, 1, 7, 0, 2, 7, 8, 2, 3, 5, 9, 2, 9, 0, 0, 0, 4, 5, 6, 8, 9, 8, 4, 5, 5, 5, 8, 5, 5, 4, 9, 7, 9, 6, 5, 5, 2, 8, 2, 3, 5, 3, 6, 5, 3, 4, 8, 6, 3, 0, 8, 5, 6, 7, 7, 8, 2, 6, 9, 0, 0, 8, 4, 7, 4, 8, 3, 3, 1, 9, 7, 1, 7, 6, 9, 0, 6, 9, 7, 1, 8, 5, 9, 5, 0, 8, 4, 8, 2, 6, 2, 9, 7, 7, 4, 8, 9, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A198866 for a guide to related sequences.  The Mathematica program includes a graph.

LINKS

Table of n, a(n) for n=1..102.

EXAMPLE

negative: -1.280117027823592900045689845558554979655...

positive:  0.741456706769858920159460956349108949987...

MATHEMATICA

a = 3; b = 2; c = 3;

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

Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]

r = x /. FindRoot[f[x] == g[x], {x, -1.29, -1.28}, WorkingPrecision -> 110]

RealDigits[r]  (* A199156 *)

r = x /. FindRoot[f[x] == g[x], {x, .74, .75}, WorkingPrecision -> 110]

RealDigits[r]  (* A199157 *)

CROSSREFS

Cf. A198866.

Sequence in context: A242530 A073410 A021361 * A073001 A088153 A259173

Adjacent sequences:  A199153 A199154 A199155 * A199157 A199158 A199159

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 03 2011

EXTENSIONS

a(93) onwards corrected by Georg Fischer, Aug 01 2021

STATUS

approved

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Last modified December 1 16:44 EST 2021. Contains 349430 sequences. (Running on oeis4.)