1.

If the trace of the matrixA=[(x-2,e^(x), -sinx),("cos"x^(2),x^(2)-x+3,"In"|x|),(cot x,"tan"^(-1)x,x-7)] is zero, then x is equal to :

Answer»

`-2 or 3`
`-3 or -2`
`-3 or 2`
2 or 3

ANSWER :C


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