The shell command<br />"/l/www/moodle/filter/tex/mimetex.linux" -e "/m/floppy/avle/moodledata/filter/tex/b0065726a4ea9dfee7009e97046fa8d6.gif" -- '\Large 
  D_{\mathbf{u}}f(0,1)=\frac{1}{\sqrt{5}}(\mathbf{j} -2\mathbf{i})\cdot (2\mathbf{i} + 4\mathbf{j}) = \frac{-4+4}{\sqrt{5}}=0.
  '<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>