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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A199057 Decimal expansion of x>0 satisfying x^2+3*sin(x)=2. 3

%I

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

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

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

%N Decimal expansion of x>0 satisfying x^2+3*sin(x)=2.

%C See A198866 for a guide to related sequences. The Mathematica program includes a graph.

%e negative: -2.131047764056355710001133695358553...

%e positive: 0.58532056434199307654267468696737728...

%t a = 1; b = 3; c = 2;

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

%t Plot[{f[x], g[x]}, {x, -3, 2}, {AxesOrigin -> {0, 0}}]

%t r = x /. FindRoot[f[x] == g[x], {x, -2.2, -2.1}, WorkingPrecision -> 110]

%t RealDigits[r] (* A199056 *)

%t r = x /. FindRoot[f[x] == g[x], {x, .58, .59}, WorkingPrecision -> 110]

%t RealDigits[r] (* A199057 *)

%Y Cf. A198866.

%K nonn,cons

%O 0,1

%A _Clark Kimberling_, Nov 02 2011

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 20 22:20 EDT 2019. Contains 325189 sequences. (Running on oeis4.)