rrgg9078 rrgg9078 19-03-2024 Mathematics contestada Within M₃ₓ₃ (the set of all 3x3 matrices), let Wₕ be the subset of matrices of the form [[a,4,b],[a,b,c],[b,c,c]]. It turns out that the set Wₕ is a subspace of M₃. For any matrix of the f (a) Line (b) Plane (c) Sphere (d) Hyperplane