BESSELJ
Definition: BESSELJ is a function that returns the Bessel function of the first kind for a complex number.
Syntax: =BESSELJ(x, n)
Situation: This formula is suitable when you need to calculate the Bessel function of the first kind for a complex number.
Example: If you have a complex number 4+3i, the Bessel function of the first kind can be found using the formula =BESSELJ(4+3i, 2), which returns a value of -0.1711-0.2509i.