Question

As an example, in matrix egin{bmatrix} 1 & -2 & 1 \ 2 & 1 & -1 \ -3 & 1 & -2 end{bmatrix} the two row operations R2 = -2R1 + R2 and R3 = 3R1 + R3 are used to convert the 2 and -3 in the first column to 0. Note that in both equations (i.e., row operations), the rows are being added (not subtracted). In other words, the correct format is R2 = -2R1 + R2, not R2 = R2 - 2R1. You are expected to do the same below. Now, given the matrix egin{bmatrix} 1 & 3 & -4 \ -4 & 1 & -1 \ 8 & 1 & -2 end{bmatrix}, Enter in the box below the row operation that would accomplish the same thing for the second row (please avoid entering a blank space in your answer). Enter in the box below the row operation that would accomplish the same thing for the third row.

          As an example, in matrix egin{bmatrix} 1 & -2 & 1 \ 2 & 1 & -1 \ -3 & 1 & -2 end{bmatrix} the two row operations R2 = -2R1 + R2 and R3 = 3R1 + R3 are used to convert the 2 and -3 in the first column to 0. Note that in both equations (i.e., row operations), the rows are being added (not subtracted). In other words, the correct format is R2 = -2R1 + R2, not R2 = R2 - 2R1. You are expected to do the same below.

Now, given the matrix egin{bmatrix} 1 & 3 & -4 \ -4 & 1 & -1 \ 8 & 1 & -2 end{bmatrix},

Enter in the box below the row operation that would accomplish the same thing for the second row (please avoid entering a blank space in your answer).

Enter in the box below the row operation that would accomplish the same thing for the third row.

As an example, in matrix eginbmatrix 1 -2 1 2 1 -1 -3 1 -2 endbmatrix the two row operations R2 = -2R1 + R2 and R3 = 3R1 + R3 are used to convert the 2 and -3 in the first column to 0. Note that in both equations (i.e., row operations), the rows are being added (not subtracted). In other words, the correct format is R2 = -2R1 + R2, not R2 = R2 - 2R1. You are expected to do the same below.

Now, given the matrix eginbmatrix 1 3 -4 -4 1 -1 8 1 -2 endbmatrix,

Enter in the box below the row operation that would accomplish the same thing for the second row (please avoid entering a blank space in your answer).

Enter in the box below the row operation that would accomplish the same thing for the third row.

Added by Sharon R.

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