The eq(M1,M2) command tests if the elements of M1 and M2 are equal.  The result is an integer array with 0s where M1[i] <> M2[i], and 1s where the entries are equal.

M1 and M2 must be the same size, or scalars.  If M1 is an array and M2 is a scalar, the result will be an array the same size as M1, with 0 and 1 entries indicating entries that were equal to the scalar value M2.

$\mathrm{with}\left(\mathrm{MTM}\right)\&colon;$

$\mathrm{M1}≔\mathrm{Matrix}\left(\left[\left[1\&comma;2\right]\&comma;\left[3\&comma;4\right]\right]\right)\&colon;$

$\mathrm{M2}≔\mathrm{Matrix}\left(\left[\left[1\&comma;2\right]\&comma;\left[3\&comma;5\right]\right]\right)\&colon;$

$\mathrm{eq}\left(\mathrm{M1}\&comma;\mathrm{M2}\right)$

$\left[\begin{array}{cc}1& 1\\ 1& 0\end{array}\right]$