EC > GATE 2014 SET-3 > Linear Algebra
Which one of the following statements is NOT true for a square matrix A?
A
If A is upper triangular, the eigenvalues of A are the diagonal elements of it
B
If A is real symmetric, the eigenvalues of A are always real and positive
C
If A is real, the eigenvalues of A and AT are always the same
D
If all the principal minors of A are positive, all the eigenvalues of A are also positive

Correct : b

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