Alternative Equation Formats

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MathML

ν_{s | t} = {\begin{cases} - \sum_{i = 1}^{m} {\hat{φ}}_{i} ν_{s - i | t} & s > t or observation s is missing \\ y_{s} - x_{s}^{'} b & 0 < s \leq t and observation s is nonmissing \\ 0 & s \leq 0 \end{cases}

Math Rendered as SVG

Math as LaTeX Source

\[ {\nu }_{s|t}=\left\{ \begin{array}{ l l } - \sum _{i=1}^{m}\hat{{\varphi }}_{i} {\nu }_{s-i|t} & s>t\ \text {or observation}\ s\ \text {is missing} \\ {y}_{s}-\mb{x} _{s}'\mb{b} & 0<s\leq t\ \text {and observation}\ s\ \text {is nonmissing} \\ 0 & s\leq 0 \end{array} \right. \]