The shell command
"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/6b40a4ac9281b10ec7347da159242fa1.gif" -- '\Large
\frac{dx}{dt}=1,\quad \frac{dy}{dt}=2\text{ ja } \frac{dz}{dt}=-1.
'
returned status = 126
Image not found!
Please try the debugging script