Question
Find the determinant of each matrix.$$\left[\begin{array}{rr}0 & 4 \\2 & -1\end{array}\right]$$
Step 1
In a 2x2 matrix, the elements are usually denoted as follows: $$\left[\begin{array}{rr} a & b \\ c & d \end{array}\right]$$ So in our matrix, a=0, b=4, c=2, and d=-1. Show more…
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