steppets9040 steppets9040

09-01-2024
Mathematics

contestada

Let A=[aij] and B=[bij] be two 3×3 real matrices such that bij=(3)(i+j−2)aji, where i, j = 1,2,3. If the determinant of B is 81, then the determinant of A is :
A. 1/9
B. 1/81
C. 1/3
D. 3

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