Alternative Equation Formats

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MathML

\begin{array}{rcl} \sum_{x = n_{1}}^{n} (\binom{n}{x}) P_{L}^{x} (1 - P_{L})^{n - x} & = & α / 2 \\ \sum_{x = 0}^{n_{1}} (\binom{n}{x}) P_{U}^{x} (1 - P_{U})^{n - x} & = & α / 2 \end{array}

MathML rendered with MathJax

\begin{array}{rcl} \sum_{x = n_{1}}^{n} (\binom{n}{x}) P_{L}^{x} (1 - P_{L})^{n - x} & = & α / 2 \\ \sum_{x = 0}^{n_{1}} (\binom{n}{x}) P_{U}^{x} (1 - P_{U})^{n - x} & = & α / 2 \end{array}

Math as LaTeX Source

\begin{eqnarray*} \sum _{x=n_1}^{n} \binom {n}{x} P_{\mi{L}}^{~ x} (1 - P_{\mi{L}})^{~ n-x} & = & \alpha /2 \\[0.1in] \sum _{x=0}^{n_1} \binom {n}{x} P_{\mi{U}}^{~ x} (1 - P_{\mi{U}})^{~ n-x} & = & \alpha /2 \end{eqnarray*}