A201901 Decimal expansion of the number x satisfying x^2+3x+4=e^x.

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

Offset

1,1

Comments

See A201741 for a guide to related sequences. The Mathematica program includes a graph.

Links

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

Example

x=3.1525907367571582749969890047671397858138094...

Mathematica

a = 1; b = 3; c = 4;
f[x_] := a*x^2 + b*x + c; g[x_] := E^x
Plot[{f[x], g[x]}, {x, -3, 3.3}, {AxesOrigin -> {0, 0}}]
r = x /. FindRoot[f[x] == g[x], {x, 3.1, 3.2}, WorkingPrecision -> 110]
RealDigits[r]      (* A201901 *)

Crossrefs

Cf. A201741.

Sequence in context: A092368 A225080 A276505 * A331381 A174239 A066249

Adjacent sequences: A201898 A201899 A201900 * A201902 A201903 A201904

Keyword

nonn,cons

Author

Clark Kimberling, Dec 06 2011

Status

approved