OFFSET
0,1
REFERENCES
HP 82480A Math Pac Owner's Manual For the HP-71, Section 11: Numerical Integration, Page 118.
LINKS
Joseph K. Horn and O. Praem, Numerical Integration .
FORMULA
From Amiram Eldar, Aug 21 2020: (Start)
Equals Integral_{x=0..1} sin(x)/x dx.
Equals -Integral_{x=0..1} log(x)*cos(x) dx.
Equals Sum_{k>=0} (-1)^k/((2*k+1)*(2*k+1)!). (End)
EXAMPLE
0.946083070367183014941353313823179657812337954738111790471454773...
MATHEMATICA
RealDigits[ SinIntegral[1], 10, 105][[1]]
PROG
(PARI) intnum(x=0, 1, sinc(x)) \\ Charles R Greathouse IV, May 08 2015
(PARI) Pi/2-imag(eint1(-I)) \\ Charles R Greathouse IV, May 08 2015
CROSSREFS
KEYWORD
cons,nonn
AUTHOR
Robert G. Wilson v, Oct 08 2004
STATUS
approved