
Matrix Theory Quiz
Authored by Alee Alee
Mathematics
University
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true about a matrix in echelon form?
A) All elements are 0
B) All leading entries are 1
C) All zero rows are at the bottom
D) Each row is linearly independent
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In row echelon form, the leading entry in each nonzero row must:
A) Be zero
B) Be to the right of the leading entry above
C) Be to the left of the previous pivot
D) Be negative
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A matrix is in row echelon form if:
A) Every column has a pivot
B) Leading entries can be anywhere
C) Zeros below pivots exist
D) Zeros are only at the top
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The pivot positions in echelon form refer to:
A) The largest numbers
B) Entries equal to zero
C) The first non-zero entry in each row
D) Diagonal entries only
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is not a requirement for echelon form?
A) Zeros below each pivot
B) Leading 1s in each row
C) Zero rows at the bottom
D) Pivot columns ordered left to right
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In reduced row echelon form (RREF), each leading 1 must:
A) Be below all zeros
B) Be the only non-zero in its column
C) Appear in the same column
D) Not exist
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
RREF requires the leading 1s to:
A) Move left to right in each column
B) Appear randomly
C) Be only in the diagonal
D) Be to the right of the leading 1 in the row above
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