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!)
A197735 Decimal expansion of 3*Pi/(1 + Pi). 2

%I #10 Oct 01 2022 00:56:24

%S 2,2,7,5,6,4,0,9,7,8,9,8,4,3,2,8,4,3,6,0,3,3,2,9,2,0,6,7,1,3,4,6,7,8,

%T 5,9,2,4,1,5,2,7,9,0,9,6,9,2,1,5,9,2,9,9,0,0,0,6,9,6,4,6,4,1,3,4,7,6,

%U 4,4,4,1,1,3,0,2,8,7,2,1,2,8,9,6,1,8,9,9,5,2,2,0,4,6,0,6,7,3,1

%N Decimal expansion of 3*Pi/(1 + Pi).

%C Least x > 0 such that sin(b*x) = cos(c*x) (and also sin(c*x) = cos(b*x)), where b=1/6 and c=Pi/6; see the Mathematica program for a graph and A197682 for a discussion and guide to related sequences.

%H <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a>

%e 2.27564097898432843603329206713467859241...

%t b = 1/6; c = Pi/6;

%t t = x /. FindRoot[Sin[b*x] == Cos[c*x], {x, 2.27, 2.28}]

%t N[Pi/(2*b + 2*c), 110]

%t RealDigits[%] (* A197735 *)

%t Simplify[Pi/(2*b + 2*c)]

%t Plot[{Sin[b*x], Cos[c*x]}, {x, 0, Pi}]

%Y Cf. A197682.

%K nonn,cons

%O 1,1

%A _Clark Kimberling_, Oct 17 2011

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 1 23:54 EDT 2024. Contains 372178 sequences. (Running on oeis4.)