4. Show that the sum of the square of the matrix elements is invariant under orthogonal similarity t
5. GivenA =,and/(A) = A3 -2A2 +5A-3, find f(A). (20 points)Note: Evaluating each term in f (A) separ
4. Find the smallest equivalence relation on {1,2,3} that contains (1,2).(12 pts) Justify your answe
5. How many nonnegative integer solutions are there to the equation x1 x2 + x3 + x4 = 21 such that(1