Mathematics, 10.01.2020 02:31 maingnat46

Let x be the set of all 3×3 matrices whose diagonal entries are all 0. with the usual matrix addition and scalar multiplication, is x a vector space? (b) let y be the set of all 3 × 3 matrices whose diagonal entries add up to 0. with the usual matrix addition and scalar multiplication, is y a vector space?

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