The shell command<br />"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/759125341603bae865c4e1f405dd2c41.gif" -- '\Large  \displaystyle w_{\text{el}}= \Delta G_{\text{IS}}=- \frac{z^2e^2}{8\pi\varepsilon_0a} \left( 1-\frac{1}{\varepsilon_r}\right) '<br />returned status = 126<br />
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