Is there any way to compute readily the confluent hypergeometric series with two variables, that is the function denoted in the literature as Psi_1(a,b;c,c';z,zeta) as defined for example on p. 225, Eq. 23, chap. 5.7.1 of the book by Erdelyi entitled Higher Transcendental Functions? Thanks for the help, Eli Pollak
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