OFFSET
1,2
EXAMPLE
arclength = 1.42116243743524518772746553679726129301339...
MATHEMATICA
s = Integrate[Sqrt[1 + D[2^x, x]^2], {x, 0, 1}]
r = N[s, 200]
RealDigits[r][[1]]
CROSSREFS
KEYWORD
AUTHOR
Clark Kimberling, Jun 12 2020
STATUS
approved