Alternative Equation Formats

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MathML

_{k + 1} {\hat{f}}_{i} = \sum_{j \in N_{i}}_{k} {\hat{f}}_{j} / n_{i}

_{k + 1} {\hat{f}}_{i} = \sum_{j \in N_{i}}_{k} {\hat{f}}_{j} / n_{i}

\[ _{k+1}{\hat{f}_ i} = {\sum _{j\in {N_ i}}{_ k}{\hat{f}_ j}}/{n_ i} \]