Question

If A is a square matrix, then $adj{A}^T-(adjA{)}^T$ is equal to

• A. $2\left|A\right|$
• B. $2\left|A\right|I$
• C. null matrix
• D. unit matrix

Answer 1

The correct option is C null matrix

$adj=A^T-(adjA{)}^T$

As we know that $adj{A}^T=(adjA{)}^T$

$=$null matrix