11.5E: Matrices and Matrix Operations (Exercises)

For the following exercises, perform the requested operations on the given matrices.
\[
A=\left[\begin{array}{rr}
4 & -2 \\
1 & 3
\end{array}\right], B=\left[\begin{array}{rrr}
6 & 7 & -3 \\
11 & -2 & 4
\end{array}\right], C=\left[\begin{array}{cc}
6 & 7 \\
11 & -2 \\
14 & 0
\end{array}\right], D=\left[\begin{array}{rrr}
1 & -4 & 9 \\
10 & 5 & -7 \\
2 & 8 & 5
\end{array}\right], E=\left[\begin{array}{rrr}
7 & -14 & 3 \\
2 & -1 & 3 \\
0 & 1 & 9
\end{array}\right]
\]

39. \(-4 A\)
40. \(10 D-6 E\)
\(41 . B+C\)
42. \(A B\)
43. \(B A\)
44. \(B C\)
45. \(C B\)
46. \(D E\)
47. \(E D\)
48. \(E C\)
49. \(C E\)
50. \(A^{3}\)

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