The shell command<br />"/lrn-mdl-prod/build/75217/filter/tex/mimetex.linux" -e "/lrn-mdl-prod/moodledata/filter/tex/821970207b3331adb054e91c5e092fd3.gif" -- '\Large  (x\star f)[i,j] = \sum_{a,b}x[i+a,j+b]\cdot f[a,b]. '<br />returned status = 1<br />
Image not found!<br />Please try the <a href="https://lo.unisa.edu.au/filter/tex/texdebug.php">debugging script</a>