Hi everyone! While there is no section for this type of question I felt it best fit here in advanced algebra. It’s an Olympiad question (the first one so probably a warmup, even more embarrassing
) about a series, and I haven’t been able to find a solution anywhere though I’ve been thinking on it for an hour and a half already.
The Question:

Here’s an abbreviated working showing my findings and where my confidence I can prove it disappears:

Thanks for reading
The Question:

Here’s an abbreviated working showing my findings and where my confidence I can prove it disappears:

Thanks for reading
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