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Matrices and Determinants question

2022 · 28 Jul · Shift 2 · Q23
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Matrices and Determinants question

2022 · 28 Jul · Shift 2 · Q23

JEE MainMathematicsMatrices and DeterminantsMCQ+4 / −1
Let A\mathrm{A}A and B\mathrm{B}B be any two 3×33 \times 33×3 symmetric and skew symmetric matrices respectively. Then which of the following is NOT true?
  1. A
    A4−B4\mathrm{A}^{4}-\mathrm{B}^{4}A4−B4 is a smmetric matrix
  2. B
    AB−BA\mathrm{AB}-\mathrm{BA}AB−BA is a symmetric matrix
  3. C
    B5−A5\mathrm{B}^{5}-\mathrm{A}^{5}B5−A5 is a skew-symmetric matrix
  4. D
    AB+BA\mathrm{AB}+\mathrm{BA}AB+BA is a skew-symmetric matrix
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