If `D_1 and D_2` are diagonal matices of order `3xx3` then (A) `D_1^n` is a diagonal matrix (B) `D_1D_2=D_2D_1` (C) `D_1^2+D_2^2` is diagonal matrix (D) `D_1D_2` is a diagonal matix

If D_(1) and D_(2) are two 3xx3 diagonal matrices, then which of the following is/are true? D_(1) and D_(2) is a diagonal matrix b.D_(1)D_(2)=D_(2)D_(1) c.D_(1)^(2)+D_(2)^(2) is a diagonal matrix d.none of these

If D_(1) and D_(2) are two 3xx3 diagonal matrices where none of the diagonal elements is zero, then

If D_(1) and D_(2) are two 3xx3 diagonal matrices where none of the diagonal elements is zero, then

If D_(1) and D_(2) are two 3x3 diagnal matrices where none of the diagonal elements is zero, then

If D_(1) and D_(2) are two 3x3 diagnal matrices where none of the diagonal elements is zero, then

If D_(1) and D_(2) are two 3x3 diagnal matrices where none of the diagonal elements is zero, then

If D_(1) and D_(2) are two 3xx3 diagonal matrices, then which of the following is/are true ?

If D_(1) and D_(2) are two 3xx3 diagonal matrices, then which of the following is/are true ?

If D_(1) and D_(2) are two 3xx3 diagonal matrices, then which of the following is/are true ?

If D_(1) and D_(2) are two 3xx3 diagonal matrices, then which of the following is/are true ?