1.

The value of x for which all the Eigen–values of the matrix given below are real is\(\left[ {\begin{array}{*{20}{c}} {10}&{5 + {\rm{j}}}&4\\ {\rm{x}}&{20}&2\\ 4&2&{ - 10} \end{array}} \right]\)

A. \(5{\rm{\;}} + {\rm{\;j}}\)
B. \(5{\rm{\;}}-{\rm{\;j}}\)
C. \(1{\rm{\;}}-{\rm{\;}}5{\rm{j}}\)
D. \(1 + {\rm{\;}}5{\rm{\;j}}\)
Answer» C. \(1{\rm{\;}}-{\rm{\;}}5{\rm{j}}\)


Discussion

No Comment Found