login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A200367 Decimal expansion of least x>0 satisfying 2*x^2+3*x+2=tan(x). 2
1, 4, 7, 8, 5, 3, 2, 5, 2, 2, 0, 1, 6, 5, 0, 1, 4, 9, 2, 4, 3, 4, 4, 0, 8, 0, 5, 0, 4, 0, 9, 0, 8, 4, 3, 5, 0, 7, 4, 8, 3, 3, 2, 7, 5, 6, 3, 8, 8, 4, 2, 8, 4, 6, 0, 5, 1, 2, 8, 2, 8, 0, 6, 6, 7, 4, 7, 5, 7, 9, 2, 2, 6, 8, 0, 2, 7, 3, 5, 9, 4, 9, 9, 9, 7, 8, 2, 2, 9, 2, 3, 3, 5, 5, 3, 5, 5, 4, 4 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See A200338 for a guide to related sequences.  The Mathematica program includes a graph.

LINKS

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

EXAMPLE

x=1.478532522016501492434408050409084350748332...

MATHEMATICA

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

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

Plot[{f[x], g[x]}, {x, -.1, Pi/2}, {AxesOrigin -> {0, 0}}]

r = x /. FindRoot[f[x] == g[x], {x, 1.4, 1.5}, WorkingPrecision -> 110]

RealDigits[r]   (* A200367 *)

CROSSREFS

Cf. A200338.

Sequence in context: A021213 A154687 A115021 * A272490 A261654 A332504

Adjacent sequences:  A200364 A200365 A200366 * A200368 A200369 A200370

KEYWORD

nonn,cons

AUTHOR

Clark Kimberling, Nov 17 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 December 3 11:13 EST 2021. Contains 349462 sequences. (Running on oeis4.)