Alternative Equation Formats

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MathML

\begin{array}{rcl} g_{j} = (\begin{array}{l} \frac{1}{\sum_{i = 1}^{N} w_{1} (d_{i})} \sum_{i = 1}^{N} w_{1} (d_{i}) x_{i} - μ (θ^{(j)}) \\ \frac{1}{N} \sum_{i = 1}^{N} w_{2} (d_{i}) vech [(x_{i} - μ (θ^{(j)})) (x_{i} - μ (θ^{(j)}))^{'}] - Σ (θ^{(j)}) \end{array}) \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} \mb{g}_ j = \left( \begin{array}{l} \frac{1}{\sum _{i=1}^ N w_1{(d_ i)}} \sum _{i=1}^ N w_1{(d_ i)} \mb{x}_ i - \bmu (\btheta ^{(j)}) \\ \frac{1}{N}\sum _{i=1}^ N w_2{(d_ i)} \mbox{vech}[(\mb{x}_ i - \bmu (\btheta ^{(j)}))(\mb{x}_ i - \bmu (\btheta ^{(j)}))^{\prime }]-\Sigma (\btheta ^{(j)}) \end{array} \right) \end{eqnarray*}