Multivariate normal distribution
A multivariate normal random variable.
Notes
The probability density function for multivariate_normal is
.. math::
f(x)=\frac{1}{\sqrt{(2\pi)^{k}\det(\Sigma)}} \exp(-\frac{1}{2}(x-\mu)^{T}\Sigma^{-1}(x-\mu) )
where :math:\mu is the mean, :math:\Sigma the covariance matrix, and :math:k is the dimension of the space
where :math:x takes values.