Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Matrices

Question:

If A and B are square matrices of the same order, then $AB^T-BA^T$ is a

Options:

Symmetric matrix

Skew-symmetric matrix

Identity matrix

Zero matrix

Correct Answer:

Skew-symmetric matrix

Explanation:

The correct answer is Option (2) → Skew-symmetric matrix

$(AB^T-BA^T)^T=(AB^T)^T-(BA^T)^T$

$=BA^T-AB^T$

$(AB^T-BA^T)^T=-(AB^T-BA^T)$

so this is skew symmetric