GAMMALN

Returns the natural logarithm of the gamma function, Γ(x).

Syntax

GAMMALN(x)

X is the value for which you want to calculate GAMMALN.

Remarks

• If x is nonnumeric, GAMMALN returns the #VALUE! error value.
• If x ≤ 0, GAMMALN returns the #NUM! error value.
• The number e raised to the GAMMALN(i) power, where i is an integer, returns the same result as (i - 1)!.
• GAMMALN is calculated as follows:

  

  where:

  

Example

The example may be easier to understand if you copy it to a blank worksheet.

How to copy an example

1. Create a blank workbook or worksheet.
2. Select the example in the Help topic.

   Note Do not select the row or column headers.

   Selecting an example from Help

3. Press CTRL+C.
4. In the worksheet, select cell A1, and press CTRL+V.
5. To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

See also:

• FACT
• Statistical functions