Determine whether the matrix is in row-echelon form. If it is, determine if it is also in reduced row-echelon form.
A)row-echelon form
B)row-echelon form and reduced row-echelon form
C)neither

Question

Determine whether the matrix is in row-echelon form. If it is, determine if it is also in reduced row-echelon form. 
A)row-echelon form 
B)row-echelon form and reduced row-echelon form 
C)neither

Quizplus · Accepted Answer

The matrix is in row-echelon form because each row starts with more leading zeros than the row above it, and the first nonzero element in each row (if it exists) is always to the right of the first nonzero element in the row above it. However, it is not in reduced row-echelon form because the leading coefficient in the second row is not 1, and there are nonzero entries above the leading coefficient in the third row.

Determine Whether the Matrix Is in Row-Echelon Form