- #1

fluidistic

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## Homework Statement

Give all the possible 2x2 row echelon reduced matrices.

**2. The attempt at a solution**I thought about the matrices (0 0, 0 0), (1 0, 0 0), (0 1, 0 0), (0 0, 1 0), (1 0, 0 1), (0 1, 0 0), (0 0, 0 1). Where the "," inside the parenthesis means a change of row.

So in total I have found 7 matrices... is this right?

Hmm isn't there an infinity of them? Like for example (1 0, a, b) where a is different from 1.

As you see I'm confused.