Question: "Let $A$ be a $3 \times 3$ matrix. If $A = -A^T$, what is the sum of all the elements on the main diagonal of $A$?" | TestX
Loading Question: "Let $A$ be a $3 \times 3$ matrix. If $A = -A^T$, what is the sum of all the elements on the main diagonal of $A$?" | TestX...