Quick plz! T(A) = Tr(A) 1. The problem statement, all variables and given/known data Let T : M22 define as T(A) = Tr(A). Show that T is a linear transformation and find the dimension of ker T. 2. Relevant equations 3. The attempt at a solution what is Tr(A)? is it trace(A), or rT(A) , r is a real number?