login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A199468 Decimal expansion of x>0 satisfying x^2-3*x*sin(x)=cos(x). 2
2, 1, 8, 5, 9, 8, 5, 9, 9, 6, 7, 8, 6, 2, 2, 7, 3, 7, 3, 3, 4, 5, 4, 3, 3, 5, 9, 6, 3, 5, 7, 7, 0, 0, 1, 5, 7, 3, 3, 8, 5, 6, 4, 6, 1, 7, 1, 9, 8, 5, 6, 8, 9, 9, 3, 7, 5, 9, 8, 8, 2, 9, 6, 1, 5, 5, 6, 6, 1, 5, 2, 7, 3, 2, 9, 5, 3, 3, 0, 5, 1, 8, 9, 5, 6, 6, 8, 4, 6, 2, 2, 6, 4, 2, 4, 7, 4, 7, 0 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

See A199429 for a guide to related sequences.  The Mathematica program includes a graph.

LINKS

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

EXAMPLE

x=2.18598599678622737334543359635770015733...

MATHEMATICA

a = 1; b = -3; c = 1;

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

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

r = x /. FindRoot[f[x] == g[x], {x, 2.18, 2.19}, WorkingPrecision -> 110]

RealDigits[r]  (* A199468 *)

CROSSREFS

Cf. A199429.

Sequence in context: A193892 A193907 A298592 * A004732 A297809 A160641

Adjacent sequences:  A199465 A199466 A199467 * A199469 A199470 A199471

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 07 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 21 02:02 EDT 2019. Contains 325189 sequences. (Running on oeis4.)