Let trace: Rnxn à R be a function defined as trace(A): = Sum[i=1 à n] aii, for all A ∈ Rnxn Write a proof that if β ∈ R, and A,B are arbitrary matrices ∈ Rnxn, then trace (βA + B) = β*trace(A) + trace(B)

Elementary Linear Algebra (MindTap Course List)
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Chapter4: Vector Spaces
Section4.6: Rank Of A Matrix And Systems Of Linear Equations
Problem 77E: Let A and B be square matrices of order n satisfying, Ax=Bx for all x in all Rn. a Find the rank and...
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Let trace: Rnxn à R be a function defined as

trace(A): = Sum[i=1 à n] aii, for all A ∈ Rnxn

Write a proof that if β ∈ R, and A,B are arbitrary matrices ∈ Rnxn, then

trace (βA + B) = β*trace(A) + trace(B)

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