The trace tr (A) of a matrix A=(a11 a12 a21 a22) is defined

Saluran Edukasion 2023-12-14T06:17:00

The trace tr (A) of a matrix A=(a11 a12 a21 a22) is defined by tr (A) = a11+a22. Prove that: tr (I) = 2
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The trace tr (A) of a matrix A=(a11 a12 a21 a22) is defined by tr (A) = a11+a22. Prove that: tr (I) = 2