Question

Compute the indicated products. $$ \left[\begin{array}{rrr} 3 & 2 & -1 \\ 0 & 1 & 3 \\ 2 & 0 & 3 \end{array}\right]\left[\begin{array}{rrr} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array}\right]\left[\begin{array}{rrr} 1 & 2 & 0 \\ 0 & -1 & -2 \\ 1 & 3 & 1 \end{array}\right] $$

          Compute the indicated products.
$$
\left[\begin{array}{rrr}
3 & 2 & -1 \\
0 & 1 & 3 \\
2 & 0 & 3
\end{array}\right]\left[\begin{array}{rrr}
1 & 0 & 0 \\
0 & 1 & 0 \\
0 & 0 & 1
\end{array}\right]\left[\begin{array}{rrr}
1 & 2 & 0 \\
0 & -1 & -2 \\
1 & 3 & 1
\end{array}\right]
$$

Added by Concepci-N D.

Calculus: Early Transcendentals

James Stewart 8th Edition

Instant Answer

Solved by Expert Joseph David

Step 1

First, we multiply the second matrix, which is just the identity matrix, with the third matrix: $$ \left[\begin{array}{rrr} 3 & 2 & -1 \\ 0 & 1 & 3 \\ 2 & 0 & 3 \end{array}\right]\left[\begin{array}{rrr} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & Show more…

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Compute the indicated products. $$ \left[\begin{array}{rrr} 3 & 2 & -1 \\ 0 & 1 & 3 \\ 2 & 0 & 3 \end{array}\right]\left[\begin{array}{rrr} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array}\right]\left[\begin{array}{rrr} 1 & 2 & 0 \\ 0 & -1 & -2 \\ 1 & 3 & 1 \end{array}\right] $$