r/askmath • u/Equivalent_Dingo_683 • 9d ago

Discrete Math Simplify sum

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Friend gave this "easy" sum for Olympiad practice, can't solve it even though I already tried relating it to e's Taylor series done harmonic stuff etc, any help?

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u/uTRexAap 9d ago

havent taken any calc so im terrible at this but i got it down to this

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u/ZellHall 8d ago

Great job!

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u/uTRexAap 8d ago

Thanks but why?