If the matrix A=(\table 2-x , 1 , 1 ; 1 , 3-x , 0 ; -1 , -3 , -x) is singular, then what is the solution set S ?

UPSC NDA I 2011 Mathematics Paper

Question : 71 of 120

Marks: +1, -0

If the matrix A=(

) is singular, then what is the solution set S ?

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