Microsoft Office Tutorials and References

In Depth Information

**BESSELI**

BESSELI

The
BESSELI
function returns the
BESSEL
function in modified form for imaginar y arguments.

=BESSELI(x,n)

The
BESSELI
function is found only if the Analysis Toolpak is installed. In addition it must be

turned on in the Add-Ins from the Tools menu. Both X and N must be numeric and greater

than zero. Notice the example in Figure 5.1. Where the value is 2 and the integer is 1, the

BESSELI
function results in 1.5906.

The value to evaluate the function.

X

The order of the
BESSEL
function. Truncated if not an integer.

N

The n-th order modified
BESSEL
function of the variable x is

Figure 5.1

The
BESSELI
function

returns the modified

BESSEL
function for

imaginary arguments.

BESSELJ

This
BESSELJ
function returns the actual
BESSEL
function. X is the value of at which to

evaluate the function. Y is the order of the
BESSEL
function.

=BESSELJ(x,n)

The
BESSELJ
function is found only if the Analysis Toolpak is installed. In addition it must be

turned on in the Add-Ins from the Tools menu. Both X and N must be numeric and greater

than zero. Notice the example in Figure 5.2. Where the value is is 2 and the integer is 1, the

BESSELJ
function results in 0.5767.

The value to evaluate the function.

X

The order of the
BESSEL
function. Truncated if not an integer.

N