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| Second derivative of a cosine product (Posted on 2024-02-27) |
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For natural number n, define f_n(x) as the product cos(x) * cos(2x) * cos(3x) * .... * cos(nx).
What is the smallest n such that |f_n''(0)| > 2024?
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No Solution Yet
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Submitted by Brian Smith
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Rating: 5.0000 (2 votes)
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