Average of $(1+X)^{-1}$
71794
Compute the mean of $(1 + X)^{-1}$ where $X$ is Poisson$(\lambda)$
39270
Showing that $e^x > 1+x$
27570
Prove $(1-x)\ln(1-x)+(1+x)\ln(1+x)\leq 2x^2$ for $0<x<1$
89758
Is there a formula for $(1+i)^n+(1-i)^n$?
46542
How do I calculate $\lim_{x\to+\infty}\sqrt{x+a}-\sqrt{x}$?
132169
$x^{2000} + \frac{1}{x^{2000}}$ in terms of $x + \frac 1x$.
147264
$ (1 + x)^{1/x} $ when $ x \to \infty$ without L’Hospital’s Rule
142575
Find the value of : $\lim_{x\to\infty} \sqrt{x+\sqrt{x}}-\sqrt{x}$
57686
Finding $ \int^1_0 \frac{\ln(1+x)}{x}dx$
126105
Compute $\sum_{k=1}^{n} \frac 1 {k(k + 1)} $
158447
Limit as $(x,y)$ approaches $(0,0)$ of $(1+x^2+y^2)^{\frac{1}{x^2+y^2+xy^2}}$
17453
What is sum of $\sum_{x=1}^n x \log (x)$
15205
Proving that the series 1 + ... + $1 / \sqrt{x}$ < $2 \sqrt{x}$
37650
Find $\sum_{m=0}^n\ (-1)^m m^n {n \choose m}$
55909
The expected value of $1/(1+X)$ where $X$ has geometric distribution
116723
Evaluating the sum $\sum_{n=1}^{\infty}\dfrac{(-1)^{n}}{n^{2}}$
102464
Prove $R < ( 1 + (\sum |a_{i}|^{p} )^{q/p})^{1/q}$ for absolute value of polynomial zeros