If and , determine the first and second columns of B.

Chapter 2, Problem 17E

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QUESTION:

If \(A=\left[\begin{array}{rr} 1 & -2 \\ -2 & 5 \end{array}\right]\) and \(A B=\left[\begin{array}{rrr} -1 & 2 & -1 \\ 6 & -9 & 3 \end{array}\right]\), determine the first and second columns of B.

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QUESTION:

If \(A=\left[\begin{array}{rr} 1 & -2 \\ -2 & 5 \end{array}\right]\) and \(A B=\left[\begin{array}{rrr} -1 & 2 & -1 \\ 6 & -9 & 3 \end{array}\right]\), determine the first and second columns of B.

ANSWER:

Problem 17E

If and , determine the first and second columns of B.

Solution:

Step 1 : 

In this problem we have to find the first and second column of matrix B.

We given

        

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