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Questions › DSE › DSE 2011 › Q26
2 marksMathematics › Matrices, determinants and linear systems › Matrix identities and Cayley-HamiltonHardabout 4 min

DSE 2011 Question 26: Matrices, determinants and linear systems

Suppose AAA and BBB are square matrices that satisfy AB+BA=0AB+BA=\mathbf{0}AB+BA=0, where 0\mathbf{0}0 is a square matrix of zeros. Then it must be that

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Suppose A and B are square matrices that satisfy AB+BA=0, where 0 is a square matrix of zeros. Then it must be that (A) A²B³=B³A² (B) A²B³=B²A³ (C) A²B³=BA⁴ (D) None of the above is necessarily true.

Matrices, determinants and linear systems has come up 102 times in 7 exams since 2006.

What this question tests

This question is on Matrix identities and Cayley-Hamilton, part of Matrices, determinants and linear systems in Mathematics.

Algebraic results about matrix powers, polynomials and special classes.

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Question from the DSE 2011 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.