The shell command<br />"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/0b2751af9aafcb1b8bf453507c423824.gif" -- '\Large \ell(C) \approx \sum_{k=1}^{n}\|\Delta\mathbf{r}_{k}\| \approx \sum_{k=1}^{n}\|\mathbf{r}'\''(t_{k-1})\|(t_{k}-t_{k-1}).'<br />returned status = 126<br />
Image not found!<br />Please try the <a href="https://mycourses.aalto.fi/filter/tex/texdebug.php">debugging script</a>