\left| \begin{array} { l l } { 1112 } & { 1111 } \\ { 1113 } & { 1112 } \end{array} \right|
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det(\left(\begin{matrix}1112&1111\\1113&1112\end{matrix}\right))
Find the determinant of the matrix.
1112\times 1112-1111\times 1113
For the 2\times 2 matrix \left(\begin{matrix}a&b\\c&d\end{matrix}\right), the determinant is ad-bc.
1236544-1111\times 1113
Multiply 1112 times 1112.
1236544-1236543
Multiply 1111 times 1113.
1
Subtract 1236543 from 1236544.
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