1.

ii) SolutionLet Δ =| () 1, () 1-1 0-131 32 0[interchanging Ist and 2nd column

Answer»

Note :-Interchange two rows or columns changes the sign: -> -1 * det(A)

Hence in the expression provided, determinant is multiplied by a factor -1 , when two of it's rows or columns are interchanged.



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