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Hypergeometric2F1 gives wrong complex infinities
Dear all! I currently have a problem with the hypergeometric function: Consider Hypergeometric2F1[1, I, I + 1, -Exp[a]] Whenever I set a > 36 I only get "complex infinity" as a result although it should be perfectly finite (take 10 as a scale). Is there any way to expand the range of a to higher values? I would be very thankful for a solution! A big thanks in advance and best greetings from germany! Wieland Brendel PS: I use Mathematica 7.