We need to find a matrix \( A \) such that \( A \neq \mathrm{O} \) (where \( \mathrm{O} \) is the zero matrix) and \( A^2 = \mathrm{O} \). This means that \( A \) should be a nonzero matrix that squares to the zero matrix.
Step 2:
Recall that a matrix that
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