Alternative Equation Formats

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MathML

L_{2} (β) = \prod_{i = 1}^{k} \frac{e^{β^{'} \sum_{j \in D_{i}} Z_{j} (t_{i})}}{{[\sum_{l \in R_{i}} e^{β^{'} Z_{l} (t_{i})}]}^{d_{i}}}

Math Rendered as SVG

Math as LaTeX Source

\[ L_{2}({\bbeta })=\prod _{i=1}^{k} \frac{ \mr{e}^{\bbeta '\sum _{j\in \mc{D}_ i}\bZ _ j(t_ i)}}{\left[\displaystyle \sum _{l \in \mc{R}_{i}} \mr{e}^{\bbeta '\bZ _ l(t_ i)} \right]^{d_ i} } \]