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!)
A200704 Decimal expansion of least x>0 satisfying 1-9*x^2=tan(x). 2
2, 8, 1, 1, 1, 6, 1, 8, 8, 4, 1, 7, 6, 3, 9, 7, 5, 2, 5, 8, 6, 3, 9, 7, 0, 1, 0, 6, 2, 4, 2, 1, 0, 3, 6, 1, 5, 1, 8, 0, 0, 5, 4, 6, 2, 2, 9, 0, 8, 2, 6, 0, 6, 0, 1, 6, 4, 9, 2, 0, 8, 7, 8, 2, 1, 5, 5, 7, 5, 7, 3, 1, 5, 4, 7, 9, 8, 6, 7, 3, 0, 7, 8, 9, 8, 5, 9, 3, 8, 7, 6, 1, 1, 1, 7, 4, 5, 8, 1 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
0,1
COMMENTS
See A200614 for a guide to related sequences. The Mathematica program includes a graph.
LINKS
EXAMPLE
x=0.28111618841763975258639701062421036151800...
MATHEMATICA
a = -9; c = 1;
f[x_] := a*x^2 + 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, .2, .3}, WorkingPrecision -> 110]
RealDigits[r] (* A200704 *)
CROSSREFS
Cf. A200338.
Sequence in context: A282626 A206712 A293777 * A257955 A024544 A202539
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Nov 21 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 June 25 13:13 EDT 2024. Contains 373705 sequences. (Running on oeis4.)