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Line 462: * {{OEIS el\|1=A020759\|2=Decimal expansion of (-1)Gamma'(1/2)/Gamma(1/2) where Gamma(x) denotes the Gamma function}}—psi(1/2) :{{OEIS2C\|A047787}} psi(1/3), {{OEIS2C\|A200064}} psi(2/3), {{OEIS2C\|A020777}} psi(1/4), {{OEIS2C\|A200134}} psi(3/4), {{OEIS2C\|A200135}} to {{OEIS2C\|A200138}} psi(1/5) to psi(4/5). [https://www.gnu.org/software/gsl/doc/html/specfunc.html#psi-digamma-function Implementation in the GNU Scientific library] * [https://github.com/splicebox/PsiCLASS/blob/master/gamma.cpp C function with the Chebyshev series] * [https://arxiv.org/src/0908.3030v4/anc/org/nevec/rjm/BigDecimalMath.java Java implementation with Taylor series] [[Category:Gamma and related functions]]

Digamma function: Difference between revisions