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If `D_(1)` and `D_(2)` are two `3xx3` diagonal matrices, then which of the following is/are true ?A. `D_(1)D_(2)` is a diagonal matrixB. `D_(1)D_(2)=D_(2)D_(1)`C. `D_(1)^(2)+D_(2)^(2)` is a diagonal matrixD. none of these |
Answer» All are properties of diagonal matrix. | |