Question:

Let 𝑃 be a 3Γ—3 matrix having the eigenvalues 1,1 and 2. Let (1,βˆ’1,2) 𝑇 be the only linearly independent eigenvector corresponding to the eigenvalue 1. If the adjoint of the matrix 2𝑃 is denoted by 𝑄, then which of the following statements is/are TRUE?

Updated On: Nov 4, 2024
  • trace(𝑄)=20
  • det(𝑄)=64
  • (2, βˆ’2, 4)𝑇 is an eigenvector of the matrix Q
  • 𝑄 3=20𝑄 2βˆ’124𝑄+256𝐼3
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The Correct Option is A, C

Solution and Explanation

The correct options are: A and C
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