BESSELY(x, n)

Returns the modified Bessel function represented by Y(x).

xThe value at which to evaluate the function.
nThe order of the function.

Remarks

* This function is also known as the Weber or Neumann function.
* If any of the arguments are not numeric, then #VALUE! is returned.
* If "x" < 0, then #NUM! is returned.
* If "n" is not an integer, it is truncated.
* If "n" < 0, then #NUM! is returned.
* In Excel 2007 the accuracy of this function was improved.
* In Excel 2003 this function was only available when you had the Analysis ToolPak add-in loaded.
* For the Microsoft documentation refer to support.office.com

 A
1=BESSELY(1,1) = -0.781
2=BESSELY(1,2) = -1.651
3=BESSELY(2,1) = -0.107
4=BESSELY(2,2) = -0.617
5=BESSELY(1.5,1) = -0.412
6=BESSELY(1.5,1.9) = -0.412
7=BESSELY(-1.5,1) = #NUM!
8=BESSELY(1.5,-1) = #NUM!
9=BESSELY("some text",1) = #VALUE!
10=BESSELY(1.5,"some text") = #VALUE!


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