For $ A, \: B $ is the subspace of $ V $
Find examples to prove $ A \cup B $ not a subspace of $ V $
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2026-05-16 05:42:42.1778910162
find examples to prove $ A \cup B $ is not part of the $ V $
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Hint: Consider $V = \mathbb{R}^2$; there are two very natural subspaces spanned by $(1, 0)$ and $(0, 1)$ respectively. Can you use this to find an example of the property you want?