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<am>int_-1^1 f(x+a/b)</am>

<php>echo '

\int^1_\kappa \left[\bigl(1-w^2\bigr)\bigl(\kappa^2-w^2\bigr)\right]^{-1/2} dw = \frac{4}{\left(1+\sqrt{\kappa}\,\right)^2} K \left(\left(\frac{1-\sqrt{\kappa}}{1+\sqrt{\kappa}}\right)^{\!\!2}\right)

'; echo '<SCRIPT SRC="../Wikka/3rdparty/plugins/jsmath/plugins/autoload.js"></SCRIPT>'; echo '<script>jsMath.process()</script>'; </php>