Alternative Equation Formats

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MathML

ξ = E [\int_{0}^{1} V^{2} (r) d r] = {\begin{cases} \frac{1}{6} & for model (1) \\ \frac{1}{15} & for model (2) \end{cases}

Math Rendered as SVG

Math as LaTeX Source

\begin{equation*} \xi =E\left[\int _{0}^{1}V^{2}\left(r\right)dr\right] =\left\{ \begin{array}{l l} \frac{1}{6}& \text {for model (1)}\\ \frac{1}{15}& \text {for model (2)}\\ \end{array} \right. \end{equation*}