OFFSET
1,3
EXAMPLE
1.120915682254854303221593758136799146010322927947952326585665475083271...
MAPLE
Digits := 100 ; fsolve( cos(Pi*x/3)-(cos(2*x))^2, x=0.1..1.4) ; # R. J. Mathar, Oct 18 2011
MATHEMATICA
RealDigits[x/.FindRoot[Cos[Pi x/3]==(Cos[2x])^2, {x, 1}, WorkingPrecision-> 100]][[1]] (* Harvey P. Dale, Apr 08 2015 *)
PROG
(PARI) solve(x=1, 2, cos(Pi/3*x)-cos(x+x)^2) \\ Charles R Greathouse IV, Oct 18 2011
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Clark Kimberling, Oct 16 2011
EXTENSIONS
Corrected by Charles R Greathouse IV, Oct 18 2011
STATUS
approved