Define the subset W2 of M3(R) to be the set of all matrices A e M3(R) satisfying a1,1 + a2,2 + a3,3 = 1. Explain why W2 is or is not a subspace of M3(R).
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- In Exercises 24-45, use Theorem 6.2 to determine whether W is a subspace of V. 37. V = P, W is the set of all polynomials of degree 3In Exercises 1-4, let S be the collection of vectors in [xy]in2 that satisfy the given property. In each case either prove that S forms a subspace of 2 or give a counterexample to show that it does not. xy0In Exercises 24-45, use Theorem 6.2 to determine whether W is a subspace of V. 39.