Question
In Problems 61-66, show that each matrix has no inverse. $\left[\begin{array}{rrr}1 & 1 & -3 \\ 2 & -4 & 1 \\ -5 & 7 & 1\end{array}\right]$
Step 1
The determinant of a 3x3 matrix is given by the formula: det(A) = a(ei - fh) - b(di - fg) + c(dh - eg) where the matrix A is given by: $\left[\begin{array}{rrr}a & b & c \\ d & e & f \\ g & h & i\end{array}\right]$ For the given matrix: Show more…
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