Alternative Equation Formats

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MathML

\begin{array}{rcl} (σ_{t + d | t}^{2})^{λ} = ω & + & \sum_{i = 1}^{d - 1} α_{i} ((1 + ψ_{i})^{2 λ} + (1 - ψ_{i})^{2 λ}) (σ_{t + d - i | t}^{2})^{λ} / 2 \\ + & \sum_{i = d}^{q} α_{i} (| ϵ_{t + d - i} | - ψ_{i} ϵ_{t + d - i})^{2 λ} \\ + & \sum_{j = 1}^{d - 1} γ_{j} (σ_{t + d - j | t}^{2})^{λ} + \sum_{j = d}^{p} γ_{j} h_{t + d - j}^{λ} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} ({\sigma }^{2}_{t+d|t})^{\lambda } = \omega & + & \sum _{i=1}^{d-1}{{\alpha }_{i}((1+\psi _{i})^{2\lambda }+(1-\psi _{i})^{2\lambda })({\sigma }^{2}_{t+d-i|t})^{\lambda }/2} \\ & + & \sum _{i=d}^{q}{{\alpha }_{i} (|{\epsilon }_{t+d-i}|-{\psi }_{i}{\epsilon }_{t+d-i})^{2\lambda }} \\ & + & \sum _{j=1}^{d-1}{{\gamma }_{j}({\sigma }^{2}_{t+d-j|t})^{\lambda } } + \sum _{j=d}^{p}{{\gamma }_{j} h_{t+d-j}^{\lambda }} \end{eqnarray*}