General term for the sum $\sum \sin(k)$
5080
How can we sum up $\sin$ and $\cos$ series when the angles are in arithmetic progression?
56945
What does the math notation $\sum$ mean?
7302
$\sum k! = 1! +2! +3! + \cdots + n!$ ,is there a generic formula for this?
74891
sum of holomorphic functions
27001
How to calculate the following sum:
83064
Is the Series Sin(k)/k Absolutely Convergent?
117200
Evaluation of $ \sum_{k=0}^n \cos k\theta $
119552
Summing Finitely Many Terms of Harmonic Series: $\sum_{k=a}^{b} \frac{1}{k}$
57549
Finding the sum $\sum_{k=1}^rk^2\binom {n-k}{r-k}$
68848
How to simplify $\sum_{k=1}^nk\cdot k!$
32823
Prove $\forall n \in \mathbb{N}: \int_{0}^{\frac{\pi}{2}} |\frac{\sin(nx)}{x}|dx \geq \frac{2}{\pi}\sum_{k=1}^{n}\frac{1}{k}$
7492
Is there a formula for $\sin(xy)$
132249
Sum of every $k$th binomial coefficient.
42424
Riemann sum of $\sin(x)$
39909
Getting a closed form from $\sum_{i=1}^{n-1} \sum_{j=i+1}^{n} \sum_{k=1}^{j} 1$
145322
Sum of a Hyper-geometric series. (NBHM 2011)
34386
Sum of a complex, finite geometric series and its identity