T: M(adsbygoogle = window.adsbygoogle || []).push({}); _{nn}=> R, where T(A) = tr(A)

Attempt:

1) T(kA) = tr(kA) = k tr(A) = k T(A)

2) T(A+B) = tr (A + B) = tr(A) + tr(B) = T(A) + T(B)

so it's linear transformation. Am I correct?

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# Determine whether the function is a linear transformation (Attempt inside)

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