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SPECIAL

ALGEBRA

BASIC

CALCULUS

CAS

DATA

ELEMENTARY

GRAPHING

MANUAL

MATRIX

NUMBER

PLOT

SCRIPTING

SPECIAL POLYNOMIALS

STATISTICAL

TRIGONOMETRIC

VECTOR CALCULUS
  DiGamma(z)
Returns the logarithmic derivative of the gamma function.


Examples  





References
http://en.wikipedia.org/wiki/Digamma_function
http://mathworld.wolfram.com/DigammaFunction.html




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