In this lesson, we will learn how to use Gaussian elimination to get a row echelon form of a matrix and hence solve a system of linear equations.

Q1:

True or False: If a 4Γ4 matrix is in row-echelon form, then the entry in the third row, second column must be 0.

Q2:

Using the row echelon form, check the number of solutions that the following system of linear equations has: π₯+π¦+π§=6,2π₯βπ¦+π§=3,2π₯+2π¦+2π§=12.

Q3:

Which of the following is the matrix ο51532ο in row echelon form?

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