Alternative Equation Formats

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MathML

\begin{aligned} \hat{E} [\hat{β} - β] & = - \frac{σ^{2}}{2} {(X^{'} W X)}^{- 1} \sum_{i = 1}^{n} w_{i} x_{i}^{'} Tr ({(X^{'} W X)}^{- 1} [H_{i}]) \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} \widehat{\mr{E}}\left[ \widehat{\beta } - \beta \right] & = -\frac{\sigma ^2}{2} \left(\mb{X}' \bW \mb{X}\right)^{-1} \sum ^{n}_{i=1} w_ i \mb{x}'_ i \, \text {Tr}\left( \left(\mb{X}' \bW \mb{X}\right)^{-1} \left[\mb{H}_{i}\right]\right) \end{align*}