BESSELI


Calculates the modified Bessel function of the first kind.

Syntax:

BESSELI(x, n)

returns the modified Bessel function of the first kind, of order n, evaluated at x.
The modified Bessel function of the first kind 


where  is the Bessel function of the first kind.

Example:

BESSELI(1, 1)
returns 0.565159103992.






 
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