Question

A square matrix $A$ is called an orthogonal matrix if

• A. $A\bar{A}=I$
• B. $A{A}^{\prime }=I$
• C. $A{A}^{\theta }=I$
• D. $A^2=I$

Answer 1

Answer: (B)

A square matrix, $A$ is called an orthogonal matrix, if $A{A}^{\prime }=I$ .