If A is 2xx2 matrix such that A[{:(" "1),(-1):}]=[{:(-1),(2):}]and A^2[{:(" "1),(-1):}]=[{:(1),(0):}], then trace of A is (wherethe trace of the matrix is the sum of all principal diagonal elements of the matrix )

If A is 2xx2 matrix such that A[{:(" "1),(-1):}]=[{:(-1),(2):}]and A^2

1.	If A is 2xx2 matrix such that A[{:(" "1),(-1):}]=[{:(-1),(2):}]and A^2[{:(" "1),(-1):}]=[{:(1),(0):}], then trace of A is (wherethe trace of the matrix is the sum of all principal diagonal elements of the matrix )
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If A is 2xx2 matrix such that A[{:(" "1),(-1):}]=[{:(-1),(2):}]and A^2[{:(" "1),(-1):}]=[{:(1),(0):}], then trace of A is (wherethe trace of the matrix is the sum of all principal diagonal elements of the matrix )

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