Question
Find the determinants of the matrices $A$ and find out which of these matrices are invertible.$$\left[\begin{array}{lll}6 & 0 & 0 \\5 & 4 & 0 \\3 & 2 & 1\end{array}\right]$$
Step 1
In this case, the given matrix is a lower triangular matrix. This is because all of the entries above the main diagonal are zero. Show more…
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