OFFSET
1,1
COMMENTS
LINKS
Z. Guede, I. Elishakov, A fifth-order polynomial that serves as both buckling and vibration mode of an inhomogeneous structure, Chaos, Solitons and Fractals 12 (7) (2001) 1267-1298.
EXAMPLE
4.694091132974174576436391778...
MATHEMATICA
RealDigits[x/.FindRoot[Cos[x]Cosh[x]==-1, {x, 4}, WorkingPrecision-> 120]] [[1]] (* Harvey P. Dale, May 01 2019 *)
PROG
(PARI) solve(x=4, 5, cos(x)*cosh(x) + 1) \\ Michel Marcus, Sep 11 2019
CROSSREFS
KEYWORD
AUTHOR
Zak Seidov, Oct 10 2002
STATUS
approved