New posts in Faq

Summation Theorem how to get formula for exponent greater than 3

Determinant of a rank $1$ update of a scalar matrix, or characteristic polynomial of a rank $1$ matrix

Find the Mean for Non-Negative Integer-Valued Random Variable

Show that if $n>2$, then $(n!)^2>n^n$.

Can $\sqrt{n} + \sqrt{m}$ be rational if neither $n,m$ are perfect squares?

How to determine equation for $\sum_{k=1}^n k^3$

Can a finite sum of square roots be an integer?

Multiples of an irrational number forming a dense subset

Find volume of crossed cylinders without calculus.

Show that the set of all finite subsets of $\mathbb{N}$ is countable.