A197001 Decimal expansion of the slope of the line y=mx which meets the curve y=1+cos(x) orthogonally over the interval [0, 2*Pi] (as in A197000).

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

Offset

1,3

Comments

See the Mathematica program for a graph.

xo=1.2488014367215508560475125020128381535587614...

yo=1.3164595537507515212878992732671186100622603...

m=1.05417844265684217515747734305673483746142104...

|OP|=1.81454423617045980814297669595599066552030...

Links

Table of n, a(n) for n=1..101.

Mathematica

c = 1;
xo = x /.
  FindRoot[x == Sin[x] (c + Cos[x]), {x, 1, 1.3}, WorkingPrecision -> 100]
RealDigits[xo] (* A197000 *)
m = 1/Sin[xo]
RealDigits[m]  (* A197001 *)
yo = m*xo
d = Sqrt[xo^2 + yo^2]
Show[Plot[{c + Cos[c*x], yo - (1/m) (x - xo)}, {x, 0, Pi}],  ContourPlot[{y == m*x}, {x, 0, Pi}, {y, 0, 2}], PlotRange -> All, AspectRatio -> Automatic, AxesOrigin -> Automatic]

Crossrefs

Cf. A196700, A196996, A197002.

Sequence in context: A336284 A258639 A072222 * A308714 A213055 A005752

Adjacent sequences: A196998 A196999 A197000 * A197002 A197003 A197004

Keyword

nonn,cons

Author

Clark Kimberling, Oct 09 2011

Status

approved