Alternative Equation Formats

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MathML

\begin{aligned} α (1) & = \frac{\sum_{a = 1}^{k} \frac{4 ρ_{a}^{2} σ_{a}^{4}}{(1 - ρ_{a})^{6} (1 + ρ_{a})^{2}}}{\sum_{a = 1}^{k} \frac{σ_{a}^{4}}{(1 - ρ_{a})^{4}}} \\ α (2) & = \frac{\sum_{a = 1}^{k} \frac{4 ρ_{a}^{2} σ_{a}^{4}}{(1 - ρ_{a})^{8}}}{\sum_{a = 1}^{k} \frac{σ_{a}^{4}}{(1 - ρ_{a})^{4}}} \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} \alpha (1) & = \frac{\sum _{a=1}^ k{\frac{4\rho _ a^2\sigma _ a^4}{(1-\rho _ a)^6(1+\rho _ a)^2}}}{\sum _{a=1}^ k{\frac{\sigma _ a^4}{(1-\rho _ a)^4}}} \\ \alpha (2) & = \frac{\sum _{a=1}^ k{\frac{4\rho _ a^2\sigma _ a^4}{(1-\rho _ a)^8}}}{\sum _{a=1}^ k{\frac{\sigma _ a^4}{(1-\rho _ a)^4}}} \end{align*}