Question: How do I solve an integral with some numerical parameters

I have a parameter r which is between a and R, a less then r, r less then R - real or complex numbers, whatever, I need to integrate following function:


The problem is that Maple always says, that it's unable to determine if r is between a and R, how can I assign r into this interval?

[note: Axel Vogt, 20 May: formatted the posting, such that it is readable]

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