MCQMediumJEE Main 2023 · 29 January, Shift 1Algebra of Matrices

Mathematics Question from JEE Main 2023 · 29 January, Shift 1

Let α\alpha and β\beta be real numbers. Consider a 3×33 \times 3 matrix AA such that:

A2=3A+αI,A^2 = 3A + \alpha I, A4=21A+βI.A^4 = 21A + \beta I.

Then:

  • A

    α=1\alpha = 1

  • B

    α=4\alpha = 4

  • C

    β=8\beta = 8

  • D

    β=8\beta = -8

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