Let \( \sum_{r=1}^{n} \frac{r^{4}}{(2 r-1)(2 r+1)}=\frac{n^{3}}{A}+... VIDEO
Let \( \sum_{r=1}^{n} \frac{r^{4}}{(2 r-1)(2 r+1)}=\frac{n^{3}}{A}+\frac{n^{2}}{B}+\frac{5 n}{C}+\frac{f(n)}{D}(A, B, C, D, \in N) \), where \( f(n) \) is thehttps://bit.ly/YTAI_PWAP https://www.pw.live
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