Questions: Examine the product of the two matrices to determine if each is the inverse of the other.
[ [3, -4], [4, -5] ] [ [-5, 4], [-4, 3] ]
Are the matrices inverses of each other?
No
Yes
Transcript text: Examine the product of the two matrices to determine if each is the inverse of the other.
\[
\left[\begin{array}{ll}
3 & -4 \\
4 & -5
\end{array}\right]\left[\begin{array}{ll}
-5 & 4 \\
-4 & 3
\end{array}\right]
\]
Are the matrices inverses of each other?
No
Yes
Solution
Solution Steps
Step 1: Calculate the Product \(AB\)
Matrix \(A\) multiplied by matrix \(B\) gives matrix \(C\), calculated as [[1 0]
[0 1]].
Step 2: Calculate the Product \(BA\)
Matrix \(B\) multiplied by matrix \(A\) gives matrix \(D\), calculated as [[1 0]
[0 1]].
Step 3: Check for Identity Matrix
Both products \(AB\) and \(BA\) result in an identity matrix, indicating that \(B\) is indeed the inverse of \(A\).