Question

Find a closed form for the sum with harmonic number $\sum_{n=0}^\infty (-1)^{n}\frac{H_{2n+1}^{2}}{(2n+1)^2}$

score 152 · Answer 1 · 2026-04-13 17:19:37

152

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Find a closed form for the sum with harmonic number $\sum_{n=0}^\infty (-1)^{n}\frac{H_{2n+1}^{2}}{(2n+1)^2}$

Published on 13 Apr 2026 - 17:19

score 156 · Answer 2 · 2026-04-07 03:35:14

156

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Closed form solution that minimizes $\sum_{i} (x^\top A_i x - b_i)^2$

Published on 07 Apr 2026 - 3:35

score 81 · Answer 3 · 2026-04-13 06:38:28

81

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Closed form of $\sum_{n=0}^\infty \frac{x^{(2n+1)k}}{((2n+1)k)!}$

Published on 13 Apr 2026 - 6:38

score 88 · Answer 4 · 2026-04-11 11:08:24

88

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Solving an exponential equation with variable in linear sum

Published on 11 Apr 2026 - 11:08

score 121 · Answer 5 · 2026-03-27 02:39:58

121

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Solving $a x = [\ln(x) - b]^c$

Published on 27 Mar 2026 - 2:39

score 149 · Answer 6 · 2026-04-13 17:32:34

149

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Closed form for $\sum_{n=0}^{\infty}\frac{x^n}{n!}\sum_{m=0}^{n+1}\frac{y^m}{(n+1-m)!}$?

Published on 13 Apr 2026 - 17:32

score 75 · Answer 7 · 2026-04-06 09:01:37

75

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Closed expression for $\prod_{i=0}^k(1-ix)$

Published on 06 Apr 2026 - 9:01

score 66 · Answer 8 · 2026-04-08 19:54:24

66

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Why generating function of Bernoulli Numbers is not continuous?

Published on 08 Apr 2026 - 19:54

score 490 · Answer 9 · 2026-04-09 02:34:21

490

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How to convert recursive function into explicit form

Published on 09 Apr 2026 - 2:34

score 53 · Answer 10 · 2022-09-05 09:38:53

53

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Find $a$ such that the limit is zero

Published on 05 Sep 2022 - 9:38

score 271 · Answer 11 · 2022-09-10 13:21:50

271

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Find the "best" $n$ such that $g(x)\leq 4$

Published on 10 Sep 2022 - 13:21

score 64 · Answer 12 · 2026-04-13 17:31:07

64

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What can we say about $S=\sum_{n=1}^{\infty}\frac{1}{n^{2}\operatorname{erf}\left(n\right)}$?

Published on 13 Apr 2026 - 17:31

score 55 · Answer 13 · 2026-04-13 05:44:57

55

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How to derive closed-form solution of this convex optimization problem

Published on 13 Apr 2026 - 5:44

score 244 · Answer 14 · 2026-04-12 06:48:54

244

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What is a closed form of this limit? (product of areas in circle with parabolas)

Published on 12 Apr 2026 - 6:48

score 430 · Answer 15 · 2026-04-06 12:18:49

430

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Do we have $\prod_{n=1}^{\infty}\left(1+\frac{\tan\left(n\right)+1}{n\left(\tan\left(n+1\right)+1\right)}\right)=^?0$

Published on 06 Apr 2026 - 12:18

List Question

Find a closed form for the sum with harmonic number $\sum_{n=0}^\infty (-1)^{n}\frac{H_{2n+1}^{2}}{(2n+1)^2}$

Closed form solution that minimizes $\sum_{i} (x^\top A_i x - b_i)^2$

Closed form of $\sum_{n=0}^\infty \frac{x^{(2n+1)k}}{((2n+1)k)!}$

Solving an exponential equation with variable in linear sum

Solving $a x = [\ln(x) - b]^c$

Closed form for $\sum_{n=0}^{\infty}\frac{x^n}{n!}\sum_{m=0}^{n+1}\frac{y^m}{(n+1-m)!}$?

Closed expression for $\prod_{i=0}^k(1-ix)$

Why generating function of Bernoulli Numbers is not continuous?

How to convert recursive function into explicit form

Find $a$ such that the limit is zero

Find the "best" $n$ such that $g(x)\leq 4$

What can we say about $S=\sum_{n=1}^{\infty}\frac{1}{n^{2}\operatorname{erf}\left(n\right)}$?

How to derive closed-form solution of this convex optimization problem

What is a closed form of this limit? (product of areas in circle with parabolas)

Do we have $\prod_{n=1}^{\infty}\left(1+\frac{\tan\left(n\right)+1}{n\left(\tan\left(n+1\right)+1\right)}\right)=^?0$

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