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Let's do some calculus! (25)

Calculus Level 4

\[\large \int_{0}^{1} \prod_{r=1}^{n} \left( x+r \right) \sum_{k=1}^{n} \frac{1}{x+k} \, dx = \, ? \]

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\[(n+1)!\] \[n!\] \[n\] \[n \cdot n!\]

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Excel in math and science

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by Tapas Mazumdar

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