Question: What numerical method does Maple use for generalized hypergeometrics?

The function hypergeom([2/3,2/3,2/3],[-1/3,4/3],z) has radius of convergence 1 and real coefficients.

But Maple tells me evalf(hypergeom([2/3, 2/3, 2/3], [-1/3, 4/3], 99/100),50);

is -138.999 + 0.0012 I


It should be more like −138.9962313171333091754979138344422738025

(Maple 18, version 991181)

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G A Edgar

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