Q30 of 256 Page 7

Find the value of the determinant .

Let

Using the property that if each element of a row (or a column) of a determinant is multiplied by a constant k, then its value gets multiplied by k.


Taking out factor 22 from R1 and 23 from R2,



Using the property that If any two rows (or columns) of a determinant are identical (all corresponding elements are same), then the value of the determinant is zero.


Since R1 and R2 are identical, therefore ∆=0.


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