A103616 Decimal expansion of the largest real root of the quintic equation x^5 + 2*x^4 - 2*x^3 - x^2 + 2*x -1 = 0.

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

Offset: 0

Author

Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Mar 24 2005

Keywords

• cons
• nonn

Comments

See comments in A103546.

Examples

			0.76660865407289120......
		

Links

• Index entries for algebraic numbers, degree 5

Crossrefs

Cf. A103546.

Programs

Mathematica

RealDigits[Root[x^5+2x^4-2x^3-x^2+2x-1,3],10,120][[1]] (* Harvey P. Dale, May 19 2019 *)

PARI

polrootsreal(x^5 + 2*x^4 - 2*x^3 - x^2 + 2*x -1)[3] \\ Charles R Greathouse IV, Apr 15 2014