The trace of a 3 x 3 matrix A is 9. A has an eigenvalue 9 of multiplicity 2. Find the determinant of A.
A. 27
B. -729
C. -162
D. 9
Answer:A
The trace of a 3 x 3 matrix A is 9. A has an eigenvalue 9 of multiplicity 2. Find the determinant of A.
A. 27 B. -729 C. -162 D. 9