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Scilab Help >> Special Functions > dlgamma

dlgamma

derivative of gammaln function, psi function

Syntax

y = dlgamma(x)

Arguments

x

real vector

y

real vector with same size.

Description

dlgamma(x) evaluates, at all the elements of x the logarithmic derivative of the gamma function which corresponds also to the derivative of the gammaln function :

x must be real. Also known as the psi function.

Examples

dlgamma(0.5)

See also

History

VersionDescription
5.4.0 Overloading allowed for list, mlist, tlist and hypermatrix types.

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