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If A is a 3x3 matrix and B is its adjoint matrix the determinant of B is 64 then determinant of A isA. 64B. `ppm64`C. `pm8`D. 18 |
Answer» Correct Answer - C We have, `absB=64` `rArr abs(adjA)=64rArr abs(A)^2=64rArr absA=pm8`. |
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