Question

The characteristic roots of the matrix $\left[\begin{array}{ccc}1& 0& 0\\ 2& 3& 0\\ 4& 5& 6\end{array}\right]$ are

• A. $1,3,6$
• B. $1,2,4$
• C. $4,5,6$
• D. $2,4,6$

Answer 1

Answer: (A)

Since, given matrix is a triangular matrix, so its characteristic roots are the diagonal elements.
Hence, required roots are $1,3,6$.