Which one of the following statements is NOT true for a square matrix A?
A. If A is upper triangular, the eigen values of A are the diagonal elements of it
B. If A is real symmetric, the eigen values of A are always real and positive
C. If A is real, the eigen values of A and AT are always the same
D. If all the principal minors of A are positive, all the eigen values of A are also positive
Answer: Option B
This Question Belongs to Engineering Maths >> Linear Algebra
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