C= [4 3]
[1 1]
E= [1 -3]
[-1 4]
Is C the multiplicative inverse of E? explain.
well let's multiply them
\(\begin{pmatrix}4 &3\\1&1\end{pmatrix} \begin{pmatrix}1 &-3\\-1&4\end{pmatrix} =\begin{pmatrix}1&0\\0&1\end{pmatrix}\)
so yes C and E are multiplicative inverses
+17 
