Problem 5 (1) Find a basis of U₁ = Span( (2) Find a basis of U₂ = Span( 132426 -5 15 4 19 ). What is the dimension of U₁? What is its dimension? (3) Find a basis of U₁ + U2. What is its dimension? (4) What is the dimension of U₁ U₂?

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