Consider the matrix as given below: M = [[1, 2, 3],[0, 4, 7],[0, 0, 3]] Which one of the following options provides the CORRECT values of the eigenvalues of the matrix? A. 1, 4, 3 B. 3, 7, 3 C. 7, 3, 2 D. 1, 2, 3
GATE 2011 · Engineering Mathematics · Eigen Value · easy
Answer: A. 1, 4, 3
- Identify matrix type: All entries below the main diagonal (positions (2,1), (3,1), (3,2)) are zero. This is an upper triangular matrix.
- Read off eigenvalues: The diagonal entries are M[1,1]=1, M[2,2]=4, M[3,3]=3. These are the eigenvalues.