Alternative Equation Formats

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MathML

\begin{array}{rcl} f (y) & = & {\begin{cases} e^{- λ} for y = 0 \\ e^{- y / γ} e^{- λ} \sum_{n = 1}^{\infty} \frac{γ^{- n α}}{Γ (n α)} y^{n α - 1} \frac{λ^{n}}{n!} for y > 0 \end{cases} \\ ϕ & = & \frac{λ^{1 - p} (α γ)^{2 - p}}{2 - p} \\ μ = E (Y) & = & λ α γ \\ V a r (Y) & = & λ α γ^{2} + λ α^{2} γ^{2} \end{array}

Math Rendered as SVG

Math as LaTeX Source

\begin{eqnarray*} f(y) & = & \left\{ \begin{array}{l} e^{-\lambda } ~ ~ ~ \mbox{for } y=0 \\ e^{-y/ \gamma } e^{-\lambda } \sum _{n=1}^{\infty } \frac{\gamma ^{-n\alpha }}{\Gamma (n \alpha )} y^{n\alpha -1} \frac{\lambda ^{n}}{n!} ~ ~ ~ \mbox{for } y > 0 \\ \end{array} \right. \\ \phi & = & \frac{\lambda ^{1-p} (\alpha \gamma )^{2-p}}{2-p} \\ \mu = \mr{E}(Y) & = & \lambda \alpha \gamma \\ \mr{Var}(Y) & = & \lambda \alpha \gamma ^2 + \lambda \alpha ^2\gamma ^2 \\ \end{eqnarray*}