Matrices Row Echelon

• A
• B
• C
• D

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• NOT POSSIBLE

It is a rectangular array of real numbers that can be used to solve a system of linear equations?

• Determinant

• Matrices

• Row-Echelon

What is the solution of the system of linear equation in the variable x and y if its reduced row-echelon form is _____

• 1,2

• 1,4

• 2,4

• 4,2

Which is not a condition for a matrix to be in row echelon form ?

• Any rows containing entirely of zeros occur at the bottom of the matrix.

• For each row that does not contain entirely of zeros, the first non zero entry is 1 called leading entry.

• The main diagonal have the same value

• For two non successive nonzero rows, the leading 1 in the higher row is further to the left than the leading 1 in the lower row.

What is the augmented matrix of the given systems of equation?

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• 
• 
• 

What is the number on the entry a_2,3 of the given matrix?

• -1

• -2

• -3

• -4

What is the order of the given matrix?

• x3

• x 0

• 3 x 2

• 2 x 3

Two matrices are called ______ if one of the matrix is obtained from the other by a sequence of elementary row operation.

• Square Matrix

• Coefficient Matrix

• Augmented Matrix

• Equivalent Matrix

What is the value of the element a_2,1 of AB when

• 16

• 17

• 18

• 19