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Feb
6
reviewed Reject Are these two events $A$ and $B$ independent?
Jan
20
reviewed Edit How to integrate exponential and square roots of polynomials?
Jan
20
revised How to integrate exponential and square roots of polynomials?
Correct spelling in formula and improved layout.
Jan
18
revised why $10$ in any base number system written as $10?$
Improved tags
Jan
12
comment Help with proving that $\pi$ is irrational
$\beta_n \ell$ is not - why? This statement definitely needs proof. Note in particular that since $\beta_n$ is defined as a series, not a sum the "many primes" argument does not work here.
Jan
11
reviewed Approve Fermat's Little Theorem and graph cycle length
Jan
3
reviewed Approve What is this surface $x^2 + y^2 +2z = 2, z \geq 0$
Jan
3
reviewed Approve Relationship between decay of Fourier transform and smoothness in $L^2$
Jan
3
reviewed Approve Mental Math Question
Jan
2
reviewed Leave Closed Defining the pre-image topology for $f:A\rightarrow B$
Jan
2
reviewed Close A twice differentiable function such that $f''$ is continuous
Dec
31
reviewed Approve Use de Moivre's formula to write $\cos(n\theta)$ as a polynomial of $\cos\theta$ and $\sin\theta$
Dec
29
reviewed Leave Open Solving $\int_{0}^{\infty} \frac{x^2}{x^8+5}dx$?
Dec
29
reviewed Close Solving $\lim \limits _{x \to \infty} (\sqrt[n]{(x+a_1) (x+a_2) \dots (x+a_n)}-x)$
Dec
29
reviewed Close Geometric inequality: $(\text{sum of distances to vertices})>2(\text{sum of distances to sides})$
Dec
29
reviewed Close Evaluate $\lim_{x\to\infty}\left[x - \sqrt[n]{(x - a_1)(x - a_2)\ldots(x - a_n)}\right]$
Dec
29
reviewed Approve Are there any combinatorial studies of Kirby calculus?
Dec
29
reviewed Approve 4-Manifolds of which there exist no Kirby diagrams
Dec
29
reviewed Approve How can a Kirby diagram fail to determine a handle decomposition?
Dec
27
reviewed Approve The general solution of $x^a = a^x$ for real $a >0$