1.

If A=[aij] is a 2×2 matrix, such that sum of co-factors of its elements is equal to the sum of elements of A. Then which of the following can be matrix A ?

Answer»

If A=[aij] is a 2×2 matrix, such that sum of co-factors of its elements is equal to the sum of elements of A. Then which of the following can be matrix A ?



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