Question

A Really Basic Infinite Sum Problem (This might also be a geometric series)

score 55 · Answer 1 · 2026-04-17 07:28:27

55

Views

A Really Basic Infinite Sum Problem (This might also be a geometric series)

Published on 17 Apr 2026 - 7:28

score 75 · Answer 2 · 2026-04-15 07:39:46

75

Views

Solving $8$ variables with $2$ equations

Published on 15 Apr 2026 - 7:39

score 96 · Answer 3 · 2026-04-19 15:00:41

96

Views

The sum $\sum_{k=0}^n k \left(\frac{1}{3}\right)^k\left(\frac{2}{3}\right)^{n-k} \binom nk$

Published on 19 Apr 2026 - 15:00

score 98 · Answer 4 · 2026-04-14 16:03:55

98

Views

Does $\sum_{n=-\infty }^\infty n^2 \exp(-n^2 \operatorname{erf}(n^2))=1$?

Published on 14 Apr 2026 - 16:03

score 75 · Answer 5 · 2026-04-15 10:42:10

75

Views

What is $\lim_{n \to \infty} (\sum\limits_{j=0}^n {2n \choose j}(1+p)^j)^\frac{1}{2n}$

Published on 15 Apr 2026 - 10:42

score 47 · Answer 6 · 2026-04-16 05:31:16

47

Views

Approximating summations via integrals

Published on 16 Apr 2026 - 5:31

score 54 · Answer 7 · 2026-04-10 03:10:32

54

Views

Discrete Summation transformation

Published on 10 Apr 2026 - 3:10

score 284 · Answer 8 · 2026-04-09 11:14:39

284

Views

Determine Sum of $\sum_{k=3}^{25}{k^2-5k+9}$ Given $\sum_{k=3}^{28}(k-3)^2 = 14,910$ and $\sum_{k=0}^{25}k = 325$

Published on 09 Apr 2026 - 11:14

score 358 · Answer 9 · 2026-04-13 18:52:59

358

Views

Numerator of harmonic number?

Published on 13 Apr 2026 - 18:52

score 179 · Answer 10 · 2026-04-13 08:18:16

179

Views

Verify generating function of Legendre polynomials

Published on 13 Apr 2026 - 8:18

score 160 · Answer 11 · 2026-04-16 14:34:18

160

Views

Prove that $\left( \sum_{j=0}^{\left[n/2\right]} {n \choose j} \left(1+p\right)^j \right)^{1/n}$ is increasing in $n$

Published on 16 Apr 2026 - 14:34

score 292 · Answer 12 · 2026-04-17 00:33:41

292

Views

Proving $2500 \pi-100<\sqrt{1 \cdot 199}+\sqrt{2 \cdot 198}+\cdots+\sqrt{99 \cdot 101}<2500\pi$ by geometric methods

Published on 17 Apr 2026 - 0:33

score 59 · Answer 13 · 2026-04-16 07:57:01

Why is $ \frac{m}{n} \sum\limits_{i=0}^{n-1} \frac{1}{m-i} = \frac{1}{n/m} \sum\limits_{k=m-n+1}^{m} \frac{1}{k} $

score 171 · Answer 14 · 2026-04-16 00:10:17

171

Views

Show that $|\sum_{k=1}^{n} |\sin{(k + \phi)}| \sin{(k + \phi)}| < M^*$

Published on 16 Apr 2026 - 0:10

score 64 · Answer 15 · 2026-04-14 04:07:00

64

Views

Why is an integral treated like a summation?

Published on 14 Apr 2026 - 4:07

List Question

A Really Basic Infinite Sum Problem (This might also be a geometric series)

Solving $8$ variables with $2$ equations

The sum $\sum_{k=0}^n k \left(\frac{1}{3}\right)^k\left(\frac{2}{3}\right)^{n-k} \binom nk$

Does $\sum_{n=-\infty }^\infty n^2 \exp(-n^2 \operatorname{erf}(n^2))=1$?

What is $\lim_{n \to \infty} (\sum\limits_{j=0}^n {2n \choose j}(1+p)^j)^\frac{1}{2n}$

Approximating summations via integrals

Discrete Summation transformation

Determine Sum of $\sum_{k=3}^{25}{k^2-5k+9}$ Given $\sum_{k=3}^{28}(k-3)^2 = 14,910$ and $\sum_{k=0}^{25}k = 325$

Numerator of harmonic number?

Verify generating function of Legendre polynomials

Prove that $\left( \sum_{j=0}^{\left[n/2\right]} {n \choose j} \left(1+p\right)^j \right)^{1/n}$ is increasing in $n$

Proving $2500 \pi-100<\sqrt{1 \cdot 199}+\sqrt{2 \cdot 198}+\cdots+\sqrt{99 \cdot 101}<2500\pi$ by geometric methods

Why is $ \frac{m}{n} \sum\limits_{i=0}^{n-1} \frac{1}{m-i} = \frac{1}{n/m} \sum\limits_{k=m-n+1}^{m} \frac{1}{k} $

Show that $|\sum_{k=1}^{n} |\sin{(k + \phi)}| \sin{(k + \phi)}| < M^*$

Why is an integral treated like a summation?

Trending Questions

Popular # Hahtags

Popular Questions