The value of x for which all the Eigen–values of the matrix given below are real is \left[\begin{array}{ccc}10 & 5 + j & 4 \ x & 20 & 2 \ 4 & 2 & −10 \ ]\end{array}

GATE Electronics and Communications (EC) 2015 Shift 2 Solved Paper

Question : 12 of 65

Marks: +1, -0

The value of x for which all the Eigen–values of the matrix given below are real is

{[\table 10 , 5 + j , 4 ; x , 20 , 2 ; 4 , 2 , −10 ; ]}

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