All the four of the 2 x 2 matrix p = are non zero, and one of its eig – McqOptions

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1.	All the four of the 2 x 2 matrix p = are non zero, and one of its eigen values is zero. Which of the following statements is true?
A.	P11P22 - P12P21 = 1
B.	P11P22 - P12P21 = - 1
C.	P11P22 - P12P21 = 0
D.	P11P22 + P12P21 = 1
Answer» D. P11P22 + P12P21 = 1

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