BESSELI
Returns the modified Bessel function of the first kind[1] of a number. In(x).
Syntax:
BESSELI(x,
n)
Revisions:
This function was added in 2.00.
-
Weisstein, Eric W.
"Modified Bessel Function of the First Kind."
From MathWorld--A Wolfram Web Resource.
http://mathworld.wolfram.com/ModifiedBesselFunctionoftheFirstKind.html