Alternative Equation Formats

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MathML

\begin{aligned} r = & v - \frac{p - q + 1}{2} \\ u = & \frac{p q - 2}{4} \\ t = & {\begin{array}{ccl} \sqrt{\frac{p^{2} q^{2} - 4}{p^{2} + q^{2} - 5}} & i f p^{2} + q^{2} - 5 > 0 \\ 1 & o t h e r w i s e \end{array} \end{aligned}

Math Rendered as SVG

Math as LaTeX Source

\begin{align*} r =& v - \frac{p -q+1}{2} \\ u =& \frac{pq - 2}{4} \\ t =& \left\{ \begin{array}{ccl} \sqrt{\frac{p^2 q^2 - 4}{p^2 + q^2 - 5}} & & \mr{if } p^2 + q^2 - 5 > 0 \\[0.05in] 1 & & \mr{otherwise} \end{array} \right. \end{align*}