The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A198939 Decimal expansion of x>0 satisfying 3*x^2-4*cos(x)=1. 2
1, 0, 1, 7, 0, 8, 5, 5, 0, 3, 3, 7, 4, 3, 8, 3, 1, 3, 0, 7, 2, 2, 0, 7, 2, 0, 1, 6, 7, 7, 1, 6, 2, 6, 0, 8, 9, 5, 6, 6, 4, 6, 1, 3, 4, 2, 9, 6, 5, 5, 5, 0, 5, 7, 5, 6, 2, 2, 6, 6, 3, 8, 0, 6, 9, 1, 6, 6, 6, 5, 9, 1, 8, 6, 4, 6, 7, 0, 0, 4, 5, 6, 7, 6, 5, 0, 5, 7, 9, 3, 4, 2, 2, 8, 1, 5, 8, 6, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
See A198755 for a guide to related sequences. The Mathematica program includes a graph.
LINKS
EXAMPLE
x=1.017085503374383130722072016771626089566461...
MATHEMATICA
a = 3; b = -4; c = 1;
f[x_] := a*x^2 + b*Cos[x]; g[x_] := c
Plot[{f[x], g[x]}, {x, -2, 2}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 1.01, 1.02}, WorkingPrecision -> 110]
RealDigits[r] (* A198939 *)
CROSSREFS
Cf. A198755.
Sequence in context: A117013 A176015 A322910 * A290372 A190410 A283881
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Nov 01 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 21 05:34 EDT 2024. Contains 372728 sequences. (Running on oeis4.)