List questions from summation

Published on 19 Mar 2014 - 23:00

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What is the sum of $1^3q + 2^3q^3 + 3^3q^3 +\cdots+ n^3q^n$?

Published on 19 Mar 2014 - 23:03

754

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Compute $\sum_{i=0}^{2n} (-3)^i$ by splitting the series into two parts.

Published on 20 Mar 2014 - 0:24

411

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Proving that $\sum_{k=0}^n\frac{1}{n\choose k}=\frac{n+1}{2^{n+1}}\sum_{k=1}^{n+1}\frac{2^k}{k}$

Published on 28 Mar 2026 - 9:53

2.3k

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Euler-Maclaurin summation for $e^{-x^2}$

Published on 25 Mar 2026 - 1:15

3.4k

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How to count matrices with rows and columns with an odd number of ones?

Published on 11 Apr 2026 - 5:00

1.8k

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sum up to nth term with fraction in the power

Published on 20 Mar 2014 - 14:27

2.5k

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Solve $2xy'' + 5y' + xy = 0$ using Frobenius method?

Published on 21 Mar 2014 - 10:20

110

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How find this sum $\sum_{n=0}^{\infty}(-1)^{n}\frac{n+1}{(2n+1)!}$

Published on 11 Apr 2026 - 16:41

461

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Sum of combinations series

Published on 04 Apr 2026 - 2:35

89

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Summation of$ n^3\over (3n)!$

Published on 11 Apr 2026 - 19:47

516

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Finding the summation of the floor of the series identity

Published on 25 Mar 2026 - 7:44

128

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Lowering the start indexes in sums

Published on 28 Mar 2026 - 13:59

90

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Can we pull $f$ from this equation?

Published on 11 Apr 2026 - 16:22

97

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How can I multiply these sums?

Published on 23 Mar 2014 - 0:27

List Question

Compute the sum $\sum_{i=0}^n 5^{i+1}-5^i$

What is the sum of $1^3q + 2^3q^3 + 3^3q^3 +\cdots+ n^3q^n$?

Compute $\sum_{i=0}^{2n} (-3)^i$ by splitting the series into two parts.

Proving that $\sum_{k=0}^n\frac{1}{n\choose k}=\frac{n+1}{2^{n+1}}\sum_{k=1}^{n+1}\frac{2^k}{k}$

Euler-Maclaurin summation for $e^{-x^2}$

How to count matrices with rows and columns with an odd number of ones?

sum up to nth term with fraction in the power

Solve $2xy'' + 5y' + xy = 0$ using Frobenius method?

How find this sum $\sum_{n=0}^{\infty}(-1)^{n}\frac{n+1}{(2n+1)!}$

Sum of combinations series

Summation of$ n^3\over (3n)!$

Finding the summation of the floor of the series identity

Lowering the start indexes in sums

Can we pull $f$ from this equation?

How can I multiply these sums?

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