The BESSELY function

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(known as Bessel's differential equation) for an arbitrary complex number a, the order of the Bessel function. Although a Y −α produce the same differential equation for real a, It is conventional to set different Bessel functions for these two values ​​in such a way that the Bessel functions are mostly smooth functions of a.

This is not intended to be a math lecture. I'll be out of my depth very quickly. Essentially, Excel has four modified Bessel functions, that specialists can use when needed. BESSELY return the Bessel function, which is also called Weber function or Neumann function.

The BESSELY The function uses the following syntax to operate:

The BESSELY The function has the following arguments:

  • X: required. The value at which to examine the function.
  • North: additionally required. The order of the function. And North it is not a whole number, is truncated accordingly.

It should be noted at the same time that:

  • And X it is not numeric, BESSELY return the #VALUE! error value
  • And North it is not numeric, BESSELY return the #VALUE! error value
  • And North <0, BESSELY return the #ON ONE! error value
  • The Northth order Bessel function of the variable X it is:
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