Share The Formula You Found

+Label +Description

Recently Referred Formulae

f_ {\chi^2 _n} (x) =\frac{1}{2^{n/2}\Gamma (n/2)}x^{n/2-1}e^{-x/2}
g_X(t)=E(t^X)=\sum\limits_{n=1}^{\infty}P(X=k)t^k
e^x
\nu = \mu^2 + \sigma^2
\left( {\rm E}\left[ \sum_{i=1}^N {\cal R}_i \right] \right)^2 &=& (\mu^N + \mu^{N-1} + \cdots + \mu)^2 \\
 &=& \left( \sum_{i=1}^N \mu^i \right)^2