LNGAMMA

Syntax: LNGAMMA(X)

X = a numeric value greater than or equal to 0

LNGAMMA returns the log base e of the gamma function evaluated at X. The function is given by:

$$\log \left( \int_0^\infty e^{-x} x^{n-1} dx \right)$$

Examples:

LNGAMMA(1.20) = -0.08537

LNGAMMA(10) = 12.801827

LNGAMMA(D30) = Error - LNGAMMA, domain is x $>$ 0, where D30 = 0

LNGAMMA(K19) = 9.9677617, where K19 = 8.7

Excel function: N/A