Karthik m Asked a Question
January 11, 2022 9:26 pmpts 30 pts
In a determinant A of order 3, a, denotes the element in ith row and jh column. i = 1, 2, 3 and j= 1, 2, 3. If a, = a, for all i and j then the elements in principal diagonal are necessary (A) 1 3. - 1 (B) 0 (C) (D) None of these
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  • Kanika goswami 1 thankyou
    this is symmetric matrix and therefore elements of diagonal can be any real no....so option a,b,c are true
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    Karthik m
    but answer is D