The shell command<br />"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/ffe5d0583b0be9bab7329c14db9836df.gif" -- '\Large 
  \nabla f = \mathrm{grad}\, f = \Big(\frac{\partial f}{\partial x_1},\frac{\partial f}{\partial x_2},\ldots,\frac{\partial f}{\partial x_n}\Big)\in\mathbb{R}^n.
  '<br />returned status = 126<br />
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