Difference between revisions of "Documentation/How Tos/Calc: BESSELI function"
From Apache OpenOffice Wiki
< Documentation | How Tos
m (→Example:) |
m |
||
| Line 8: | Line 8: | ||
: returns the modified Bessel function of the first kind, of order <tt>'''n'''</tt>, evaluated at <tt>'''x'''</tt>. | : returns the modified Bessel function of the first kind, of order <tt>'''n'''</tt>, evaluated at <tt>'''x'''</tt>. | ||
| − | : The modified Bessel function of the first kind <tt><i>I<sub>n</sub></i>(<i>x</i>) = <i>i<sup>-n</sup>J<sub>n</sub></i>(<i>ix</i>)</tt>, where <tt><i>J<sub>n</sub></i></tt> is the Bessel function of the first kind. | + | : The modified Bessel function of the first kind <tt><i>I<sub>n</sub></i>(<i>x</i>) = <i>i<sup>-n</sup>J<sub>n</sub></i>(<i>ix</i>)</tt>, where <tt><i>J<sub>n</sub></i></tt> is the [[Documentation/How_Tos/Calc: BESSELJ function|Bessel function of the first kind]]. |
=== Example: === | === Example: === | ||
Revision as of 03:56, 24 February 2008
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 In(x) = i-nJn(ix), where Jn is the Bessel function of the first kind.
Example:
BESSELI(1; 1)
- returns 0.565159103992.
See also:
Issues:
- This function currently appears in the AddIn category of the Function Wizard.
