Also add same equality for covariance

Signed-off-by: Thomas Gassmann <tgassmann@student.ethz.ch>

iml/chapters/various.tex

@@ -18,7 +18,7 @@ \section*{Various}
 Cov$[X] = \E[(X- \E[X])(X- \E[X])^\top]$;
 Covariance matrix for centered data: $
 \widehat{\operatorname{cov}}(X)=\frac{1}{n}X^\top X=\frac{1}{n}\sum_i x_ix_i^\top
-$; $p(z|x,\theta) = \frac{p(x,z|\theta)}{p(x | \theta)}$, $\text{Var}(AX) = A \text{Var}(X) A^\top$
+$; $p(z|x,\theta) = \frac{p(x,z|\theta)}{p(x | \theta)}$, $\text{Var}(AX) = A \text{Var}(X) A^\top$, $\text{Cov}(AX) = A \text{Cov}(X) A^\top$
 
 $A^{-1}=
 \begin{bsmallmatrix}