List questions from summation | MathQa

$\sum_{k=n}^{\infty}\left(n-k\right)e^{-\lambda}\frac{\lambda^{k}}{k!}= ?$

Published on 12 Jan 2025 - 8:41

Double sum involving $\cos$

Published on 12 Jan 2025 - 17:44

Show that this sum is an integer.

Published on 26 Dec 2024 - 14:29

Asymptotic solutions of a sparsely perturbed recurrence relation

Published on 12 Jan 2025 - 8:40

Proving Holder's Inequality from $a^nb^{(1-n)} \leq na + (1-n)b$

Published on 31 Dec 2024 - 1:13

Deriving the formula for the $n^{th}$ tetrahedral number

Published on 12 Jan 2025 - 8:41

I just started this subject, and I like to know how to solve excersise like this. I know the properties.

Published on 12 Jan 2025 - 8:41

Geometric Series Equivalency

Published on 12 Jan 2025 - 18:17

Prove that $\sum_{k = 0}^d 2^k \log(\frac{n}{2^k})= 2^{d+1} \log (\frac{n}{2^{d-1}}) - 2 - \log n$

Published on 12 Jan 2025 - 8:41

Sum of $i$ times $(i-1)^\text{th}$ Fibonacci Number

Published on 12 Jan 2025 - 8:41