Describe the possible echelon forms of a nonzero 2 x 2 matrix.

we approach the issue by taking note of that a 2 x 2 matrix can either have 1 0r 2 pivot columns. If the matrix has no pivot columns then every entry in the matrix must be zero.

-> if our matrix has two pivot columns then :

-> if our matrix has one pivot column then we have a choice to make. If the first column is pivot column then:

->otherwise, if the pivot column is the second column then:

answ5

step-by-step explanation:

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