Alternative Equation Formats

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MathML

d^{*} (x_{i}, x_{j}) = {\begin{array}{lcl} \frac{1}{2} (\frac{1}{f (x_{i})} + \frac{1}{f (x_{j})}) & if d (x_{i}, x_{j}) \leq r \\ \infty & otherwise \end{array}

Math Rendered as SVG

Math as LaTeX Source

\[ d^*(x_ i , x_ j) = \left\{ \begin{array}{lcl} \frac{1}{2} \left( \frac{1}{f(x_ i)} + \frac{1}{f(x_ j)} \right) & & \mbox{if } d(x_ i , x_ j) \leq r \\[0.10in] \infty & & \mbox{otherwise} \\ \end{array} \right. \]