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What are gradually changes on earth? Does 8 oz. of butter equal 1 cup? Find all solutions to sin(z + i) = 1? Suppose that A ⊆ B ⊆ V .
(a) Prove that span(A) ⊆ span(B).
(b) Prove that if B is linearly independent then A is linearly independent.? Does tropical storm Lee suffer from an inferiority complex?