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Let "T"r=|[r ,x,(n(n+1))/2], [2r-1,y, n^...

Let `"T"_r=|[r ,x,(n(n+1))/2], [2r-1,y, n^2],[ 3r-2,z,(n(3n-1))/2]|` .where `T` is the determinant of the given matrix, Then show that `sum_(r=1)^n"T" _r=0` .

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