OFFSET
1,2
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
1.87510406871196116644530824107821416257011173353...
MATHEMATICA
RealDigits[x/.FindRoot[Cos[x]Cosh[x]==-1, {x, 1.8}, WorkingPrecision->120], 10, 120][[1]] (* Harvey P. Dale, Jul 24 2011 *)
PROG
(PARI) solve(x=1, 2, cos(x)*cosh(x) + 1) \\ Michel Marcus, Sep 11 2019
CROSSREFS
KEYWORD
AUTHOR
Zak Seidov, Oct 10 2002
STATUS
approved